I used side pull brakes and there was room for wider tyres but the frame was quite heavy so I didn't continue with mine. Try it before you pull the trigger on relatively expensive centre pulls by using side pulls. You can pick up dual pivot calipers quite cheaply.
It's sort of been asked before....
https://www.lfgss.com/conversations/286693/#comment12982148
I used side pull brakes and there was room for wider tyres but the frame was quite heavy so I didn't continue with mine. Try it before you pull the trigger on relatively expensive centre pulls by using side pulls. You can pick up dual pivot calipers quite cheaply.