And Times-Up can help you put it all together. Might also be a good place to see if anyone has an extra lever/caliper they want to trade/sell/give away.
As for bars,
Sheldon knows all. Basically, get standard 25.4mm bars. 31.8 is oversize (OS) and the others are less common sizes. Cross levers come in standard 25.4 and OS 31.8 clamp sizes.