Huge Electric Longboard Lipo Enclosure

These are the printed parts for my huge-ass 6s2p 10000mAh DIY electric longboard LiPo. I used common aluminum profiles found in a hardware store for the outer frame. These ones are the right ones:
http://modelltechnikdirekt.de/Alfer-combitechZ-Aluminium-Rechteck-U-Profil-155-x-275-x-15-blank-1000-mm
I soldered the 5000mah cells myself. Be very careful when doing this! The Pack has a built-in low voltage alarm and a buck converter with usb charging output as well as a dual 4mm and a XT60 con