Pica kits are more complicated than those you have listed.

I've built both of the suggested Sig models, and agree that they would be good choices. Sig Craftsman Series kits are my favorite, posing the right balance between a challenge and ease of building. Their instructions are top notch, and the plans are easy to read.

As foodstick knows, I don't like to solder. If you decide on a BUSA kit, warm up your soldering gun. LOL