Why not get it ceracoated,found a guy who did 2 of my mods recently for a very good price,paint is amazing and very durable,as soon I get some time I will do a review
It's looks like you are almost there @MHL ... just need to remove the plastic cover that the screen goes though, then it looks like it all just slides out?
Display tray is a clip on,battery contacts can be slided,510 needs desoldering black wire and board and usb are just sitting in the slot as long as I can remember, disassembled mine a few times, there's not much space and a display is a bit tricky, bit if you brake a display pm me,have a few extra