I can find cheap chainrings, this operation wouldn't cost me that much.
And actually yes sometimes the 50 isn't enough, i have a lower cadence than average, i've worked on it but i'm faster that way.
Having a 30T chainring is a bit useless, 34 would be enough, and with bigger rings i would be more often mid cassette.
Last but not least, the whole bike components are black except the right part of the chainset that is gray, since i got the bike i knew it had be changed at some point down the line haha.