I really like the build, well done!
Personally, I'd only change two minor things: Get rid of the flatbars, I just don't like them. And level the saddle, with flites I find them the most comfortable when the nose is pointing ever so slighlty up. You could also get double straps and toe clips.
Just finished this bike.
Really happy with it, please criticise it. Gotta another project on go so will just start putting more projects in the thread below.
https://www.lfgss.com/conversations/301770/?offset=75#comment13839643