okwell you could tryusing this helm http://www.tokyo-model.com.hk/trade/productview/3298
and add on to it i guess
as for the reatof the armor um camo pantsand shirt and custom armor
try using the search button I think a topic similar to this was posted before
Acrylic paints do. Latex based do not. Oil based can do alright, but end up looking sorta funky.... You can seal it with an appropriate aerosol or paint sealant, and then go on to use whatever kind of paint you want to.