First of all, Welcome!
Second, I hate to throw an odd opinion (seems like I have a lot of them

), but I thought I read somewhere that you should use crude in the tcase and diffs and synthetic in the auto trans (not sure about your manual).
I'm a fan of synthetic though so if I ever decide to spend the bucks, I may switch from the crude that's in there now to a synthetic in everything.
The only suggestion I'd make is to be sure you can remove the fill plugs before you remove the drain plugs. I guess that's a no-brainer, but guess who drained the rear diff first and then found out he couldn't get the fill plug out (yup, me again

). Let me tell you filling the diff through the drain hole was a major PITB.