22's on static drop

I have a 1989 extended cab long box that I want to do a 5-8 drop with 6 Alcoa 22 inch wheels... can this be doable? What would be the size of tires I would have to run?

id like to air bag it on day but I want to budget build It for now ...

I'm going to be doing the same deal, wondering if you've finished yours or figured anything out?