You should be looking to secure your
JEPP about now. This will take care of one of your endgame weapons for now. Sure, you can get it on very early, but we have no other choice... this will ultimately be one of your endgame weapons.
So, in the offhand you could be looking at the Kyr'ozch Type 4's, or even Ofab Peregrine Mk6's to pair with it through to the end, although the other weapon that shouldn't be discounted is the
Twitch.
As for implants, it can be a bit subjective. I've always been of the mind not to touch symbiants (except in some specific circumstances) until I can get better than QL200 in ("Living" symbiants). Their level requirements are level 154, so you have 4 levels to go, but the first ones I'd generally bang in would be a support brain, artillery all down the right side (eye, arm, wrist, hand), and you'd have a great start.