A Few Quick Questions About CPA Marketing

Sorry to clog up this forum with more questions that have probably been answered before but, here goes:

1) When you sign into your CPA network searching for an offer, can you please share what you look for, ie the process, when selecting an offer to promote?

2) Landing pages: I want to create a Wordpress site as my "landing page". I also want to split test as I'll be using Adwords Search (for now). Since most people seem to send the visitor to the main url, like some-cpa-offer.com how do you split test using Wordpress? Should I do something like "some-cpa-offer.com/page1" and "some-cpa-offer.com/page2"?

3) Also, say I set up 1 campaign and created two ads per keyword/ad group. Can one ad have domain.com/page1 and the second ad have domain.com/page2? Or does google see this as 2 different domains? Is that how people split test landing pages?

Any advice would be great. I want to start my first Search campaign but still unsure as to which offer to go for. My ad spend is about $100/day until I can get some sales.

Thanks