>>2907376
>>2907522
>>2907524
Aluminium isn't ideal, but it's certainly an option. Especially if you want to prototype things quickly/cheaply it's hard to beat wood/aluminium.

That said, it's not hard to get your own designs milled in CFRP if you can't do it yourself.

>>2908148
That 16AWG wire on top of the FC looks like it's barely attached. That's not a solder joint I would trust to hold up in the air.