I'm taller than that. Height is a non issue in the cockpit. I have flown the 145, CRJ, and 175.

The seats and pedals adjust.. complete non issue once seated on any of them. 145 is the easiest to get in and out of since the seat slides sideways and back, CRJ second easiest, and 175 is a pain to get into the seat. The stupid yoke is back into the seat which doesn't slide back far enough so you have to push the yoke forward forward while crawling in. It is an inconvenience for literally about 10-20 seconds total of your day. Who cares really. Personally, I'd like to take a screwdriver and take out the seat adjustment limiter block they rigged in there so it would let the seat come back further like it is designed to do but maintenance would likely flip out. So I just deal with it. Once in the seat it's fine.

Now in the back? All of them are uncomfortable as hell for a tall person, the 145 is miserable. Mainline is nearly just as bad though with the new AA 737 being the worst of all time.