Hi Manuel
A little advice on the Revell figure set:
They are made of that soft plastic, not the styrene one... this could turn an issue later, since the paint tend to flak out of the plastic.
"Hecker and Goros" and "Andrea Miniatures" make white metal sets, CMK resin ones, and these being more expensive and smaller (in numbers) are much more durable 

Give it a thought
(I have no commercial interest in any of these companies)
Please keep us posted on your progresses...
Skipper