I'm picking up a Peugeot UO-8 for my first singlespeed build. I think it takes 27" wheels. Does anyone know if it will accomodate 700c? Would I have to change brakes?

Also, can the kooky stem be swapped easily, i.e. does it have a 1" steerer clamp and handlebar? And will the seatpost take a modern saddle?

Lastly, any issues foreseen in removing the outer chainring and guard?

Thanks in advance. Cross posted in vintage.