I have been looking around here, and IOC, and 501st..... and my brain is about to explode

Is there another person with an Naval Trooper costume that can start me pointed in the right direction on things??
I am a very handy guy. I can sew. I can woodwork. I can paint. I can fabricate. I have no idea how to do fiberglass, though.
Where is a good, and cheap place to get a helmet? Even a place to buy a rough helmet that I can finish, sand and paint myself will be good.
Is the gun a repainted rebel blaster?? On the IOC forum a guy had one that was repainted.
Where do I get boots??
I would prefer the jumpsuit version. I saw on the IOC forums that there is a jumpsuit version and a tunic/pants version. Are both versions okay with the 501st?? I would prefer to buy a jumpsuit and modify it rather than trying to make one from scratch.
The belt "boxes" are just re-painted Altoid's tins?? I have plenty of those around

Thanx for any and all help!!