As for sizing ... you are out of luck. Everyone is different in proportion, preference, strength, and flexibility. If you own a bike and ride, you know basically what fits. If you don't, test-ride a ton of bikes, then look up the geometry charts. You might not know what they mean but you can compare like values and see what the value was on the bikes that you liked and didn't like.
I went here (
https://www.bikesonline.com/2022-pol...o-ultegra-carb) and the have a fit calculator. that actually asks you to measure your inseam, arm etc. Anther good idea is
https://www.competitivecyclist.com/S...ulatorBike.jsp the competitive cycling measurement system. But in all cases, you are taking a mostly blind leap.
Here is the S7D
https://www.polygonbikes.com/strattos-s7d/
One issue I see right away is that it has a cable-concealed aero stem, so adjustment vertically might be minimal. The riding position looks sort of racy based on seat-bar drop and length of stem. I don't see any stem options---you are pretty much stuck. Not sure if they offer spacers and different stem lengths. Possibly you could talk the manufacturer into building a bike with a different length stem:
(Handlestem-----ENTITY XPERT ALLOY, EXT: 90mm (XXS, XS, S) / 100mm (M, L) / 110mm (XL, XXL), BB: 31.8mm, R/D: 10degree) but that wouldn't help with height.
If you are willing to drop $2100 on a bike you have never ridden, then you are.
Personally, I understand geometry charts pretty well, and have drawn up schematics of frames with a stick figure of myself riding, based on actual physical measurements and my riding position on other bikes I like. This has allowed me to buy bikes online which fit ... but some stuff, like the slight toe overlap on my Fuji, I couldn't predict from my drawings. If you don't know what fits and what the numbers mean, you are straight up gambling. Sometimes gamblers win.