Man it looks awesome, I'm currently having difficulty
I am currently using Rhinoc Pep files. I noticed that the gauntlets (forearms) require a lot of cutting since it's hard to bend EVA foam into sharp angles.
Great idea with the crafting foam! Your build displays the importance of having thinner foam sheets (like crafting foam). Crafting foam definitely helps with the more intricate and detailed parts of the armor.
(to help me out with the build so far I've just purchased a dremel tool, and a jigsaw, hope this makes better cuts and smoother edges)
Awesoe job man!