I bought a back 700c wheel with a flip flop hub to start my project. and kept going from there I bought a 10 dollar steel frame and just built the bike up. then again I was working with old ass parts and ran into problems like reverse threaded headsets and stems that didn't fit but eventually it worked for me. For you, it should be like assembling a bike cause you got shiny new meant to go together parts instead of my ghetto POS.
Good luck and enjoy building it