Oh my lord. I am sorry but wooooooowwwwww. I couldn't keep my jaw from drooping the first time I saw your image.

Maybe post some wire frames of all angles if possible so we can all give you ideas (not lot from me I am still a beginner :/) on sections where you can reduce that insane poly-count and potentially prevent you from upgrading a 4th and maybe even a 5th time unless you were planning on upgrading anyways.

Also make sure you have multiple back up in different hdd which I am sure you have.

this is some rediculoous awesome looking hard surface porn