Hey there, Norb.!
I can help you out with your first two questions.
#1. First off, you CAN have multiple products or services for sale, each with its own commission, if you want.
I have 3 different services levels with 2 different payment structures for customers, so basically my affiliates have 6 different services they can sell. I have pre-paid year plans set to give my affiliates a set percentage and the monthly subscriptions just get a set dollar amount. We had to set our affiliate code to identify four distinct products. Apparently the coding wasn't that hard

. I manage it all from one merchant account. I think the most challenging part of managing several services/products for one account, is communicating how commissions are set up to affiliates. I want to articulate the benefits as clearly as possible, but it's a very confusing set-up, so I rely pretty much on giving them the raw numbers.
#2. Recruiting Affiliates: I haven't used ShareASale's 2K affiliate recruiting strategy. I would love to hear more, when you do.
Currently, I google relevant keywords to my site/service. I contact websites that seem relevant and get pretty good traffic. I've made some great contacts, but it's been challenging to get many affiliates through "cold emails."
Cold calls work better. If you can find phone numbers, call your dream affiliates. Seriously.
Also, if you get 28K more to spend on recruiting affiliates, you might consider Syntryx. I was so d-mn incredible, that I almost cried.
I hope you'll consider ShareASale. The people there really build a sense of "the ShareaSale Community". Carolyn Tang rocks.