Well, not being quite in the same financial situation as good aeroplane, I'd ba far more modest in my purchases. I'd skip quite a lot of the crap I've been buying and I'd never get the Mega paintset or two of the same exacto-knives.
I'd get me:
A pair of clippers or wirecutters really- they seem to be able to handle metal a bit better, and face it -it's not always the soft GW-metals you're cutting.
A knife. This would be a cheap one, like in a a set of different sizes all for a few pounds/dollars or whatever.
Three paintbrushes: I use a cheap version, let me check...Dekorima sizes "0001, 1 and 2.
The paints I'd be using -no inks.
A bottle of "Super attak Gel control"-it's a superglue but not a fluid - it's (surprise) a gel -brilliant.
Then add some Green stuff,
One scalpel -now this is where I'd spend some money, make sure there's no plastic details-metal all the way.
A GW sculpting tool (or the equivallent )
Finally a pair of tweezers (sp?)
And if you really need it- some painting medium (to make those finedetail stuff) and a pair of rubbergloves and a thin needle)
That'd be about it really- the rest of my stuff is really only in the way.