I received my first bike today, got it assembled. The guy at the shop, asked me if I got a 58cm just by looking at me, I was fitted for a 54 at Performance, and I got a 53.5cm, I did put all my measurements on Competitive Cyclist and it's calling for a 54cm top tube.

After The bike was assembled, the guy was surprised as it seemed like the bike fits me except the stem which is 90mm , CC calls for 100mm. My question is should I get say a 120mm stem to make up for the 10mm short in the top tube. CC saddle handlebar is 53cm while it's actually 49cm on my bike. My understanding is that longer stem will resolve this issue.

I took this picture, in which to my novice eyes looks like I'm too big for the bike at least my upper body.

Any input is greatly appreciated.





I'm also thinking maybe I have to raise the saddle a tiny bit.