However, i was wondering if it would be possible to take some base nylon, ie. MXD6 and instead of glassfiber use carbon fiber fill + some aluminium (or perhaps graphite or graphene...) powder to get to even higher strength and temperature range.

Any ideas - or should i just stick with the base VLF 84009 or take it as a starting point?
Perhaps add 10% Carbon Fiber and to have enough binding material also 10% Nylon-66 or MXD6 ?

The reasoning is that perhaps with other fillers i could achieve thinner walls, hence faster to print and lighter end product!