Yay!!! I get to be the first to welcome you!!
Welcome to the forum.
I'm really new here too (see my introduction just a couple below yours in this section), and also new to the open relationship thing, so I'll refrain from trying to give any advice. But It sounds like you are on the right track. I'm a big believer in taking your time at first, and of course keeping everything complete upfront, open and above all, honest.
Welcome to the neighborhood!!! Here... I baked you some cyber polyamourous cookies.
Woo-Hoo!! I love being the welcome wagon!