Luke said it better than I could have, great advice.
I don't see why you need more gear. Why would you want a 50mm 1.8 lens if you already have a 50mm
1.2 lens??
What limits are you meeting with you current gear? Is there a specific reason you need a flash right now?
It would help us greatly if you would specify your needs.
ETA: hope I didn't sound mean! just trying to understand better!
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-Indigo
D90, Minolta xg-9, Petri gx-1
A bunch of glass, mostly old, manual lenses.
Flickr