Im going to stick with the rear mech and chainset, ive got a set of Campagnolo grand sport high flange tubless and a set of Campagnolo tipo tubless, they both need a service, which ones would you choose?
It's almost certainly 700c, best way to find out is mounting an actual tire. If they are 27 inch you will not be able to get a 700c tire on. If you do not have an old tire lying around maybe a fellow RBer near you will lend a hand.