[LAW (Murphy)]

Hey guys, it's been a while since I started lurking on here and I've managed to aquire an 8" Skywatcher Newt, an EQ5 and a 20mm Meade Plossl but as I haven't been able to use the scope yet (waiting for the mount to arrive) I don't know what else I should be looking at.

Presumably a collimator is in order, I have a small finder scope and red-dot finder but I don't know what kind of eyepeices this thing can deal with? The Andrews 2" 70 degree range look nice.
I was thinking of getting a midrange Andrews eyepiece (probably the 13mm) and a 2x Barlow to get a fairly wide effective range from 2 eyepieces. Is that how it works or am I over-simplifying it?

I'll be starting off with visual observing but I have a few SLRs here which may end up getting Frankensteined into dedicated astronomy cameras so I'll probably need a 3x barlow and filters later on but for now am I on the right track?