Ripstop is a type of weave like twill or taffeta. Or rather not a weave but an addon feature to the fabric weave. Ripstop means it has thicker denier strands criss crossing the thinner denier fabric with the hope that a potential tear will stop at the thicker strand.
Both nylon and polyester can be ripstop.
With that out of the way the answer is: It depends on a lot of factors, but it's likely going to be just fine.
There are quite a few differences between polyester and nylon the latter of which is usually used in more high end tents and the former is commonly used in lower end tents. However this is not to say that polyester cannot be used in high end tents as it has some significant advantages to nylon. Also vice versa.
Durability:
Nylon is more durable. Kinda. When dry nylon has significantly more tensile strength than polyester. However when wet nylon's tensile strength drops below polyester's. Polyester however is not affected by humidity or wetness in any way. The other downside nylon has when wet is that it tends to sag. This means that a taut tent in the day can become saggy when it's raining, which may require correcting. The getting wet thing apparently cannot be completely remedied with waterproof coatings.
Resistance to elements:
This is where polyester shines. It is not sensitive to UV and is more resistant to chemicals than nylon. Thus polyester can handle significantly more direct sunlight than nylon. Though the waterproof coatings used in nylon tents usually have uv-protection built in the solution is not 100% effective kinda like sunscreen only extends the time one can stay in sunlight before burning. Whether uv-resistance is an issue largely depends on how and where the tent is used and also for how long and how much. If the tent is only rolled out at sundown and then packed at sunup, it's a complete nonissue. But if the tent stays put for days in the sun (like we tend to do on tours sometimes) then polyester may be a better option.
Coatings:
The reason polyester is used in many cheaper tents is not necessarily because it's cheaper per se, but because it's cheaper to make into a serviceable tent. This is due to coatings. More expensive tents use silicon coating for waterproofing and also for uv-protection with nylon tents. Silicon is superior as a coating as it does not degrade the fabrics durability (it might even make the fabric more durable), it allows the fabric to flow freely and it can be refreshed. The downside to silicon coating is that it usually needs to be double sided and it's more expensive than polyurethane coating.
A polyurethane coating is cheaper as it's typically one sided only and it's usually more waterproof. It however binds the strands in the fabric making the fabric stiff and less durable. This means that a PU-coated fabric needs to be thicker and heavier than silicon coated to reach the same durability. The other downside of PU-coating is that it degrades over time and when leaks start to appear it cannot be refreshed.
As mentioned above, nylon is UV-sensitive. This means that a nylon tent with a one sided PU-coating (as the coating is on the inside) will degrade quickly. Also the inside coating combined with the sagging tendencies of wet nylon might mean that the fabric or coating won't last long when properly tensioned in rain.
Summary:
A silicon coated polyester tent can be superior to a nylon tent depending on usage. However as polyester is more weather resistant, it can be PU-coated and is used in most lower end tents as a result. Resulting from that, the lower end tents are typically pretty heavy. As nylon can only really be silicon coated it's used in higher end tents which use more expensive materials. And nylon is initially more durable so there's that too.
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I'm going on a limb and guessing that the tent OP is questioning about is a lower end PU-coated polyester tent (as that's what jack wolfskin tends to have on hand).
If the polyurethane coating has not degraded and the tent is still waterproof it should be more than good enough for a cross country ride. It usually takes much longer for the PU-coating to degrade than 5-6 years but apparently storage conditions do play a role there. Cool and dry is best.
I'd check the poles for cracks or deformations and replace when necessary.
It's likely pretty heavy but that's something the OP will have to weigh against other factors (budget, overall gear weight, etc).
A quick reference on weights.
Our first tent was an affordable small 2-person polyester dome tent. Weight was over 3kg.
Our current tent is a huge 3-person silicon coated polyester tunnel tent with a massive vestibule that could probably take even our bikes if we wanted to store them there. Weight is around 3kg.