Here's my opinion:

Donuts are good.

So there.

If those are the brakes you intend to use on the bike, I would prepare to get different calipers. Fillet-brazed Schwinns of that era typically used medium-to-long reach calipers, around 52-55mm with a 27" wheel. Those look like "short" reach, which max out at 49mm or so. If you build it with 700C wheels, you'll need another 4mm of reach also.

Pretty color. I'm a traditionalist- I would go with all silver components and either color-matched or black handlebar tape.