I have had a lot of effort put into the website, and the main things I need to know are:
1) Skins. How difficult will it be for the skin author (Staff member) to adjust the IPB skin to match an XF theme?
2) IP.Nexus. It's my main source of revenue; I will need something very much like it in order to switch. You can find it at forum.bettercraft.net/store - I mostly need support for recurring payments via Paypal, as well as the option to change user's group upon successful purchase.