New wheels pic inside- how do i set negative camber to clear arch ? Im unsure

You really need a full tracking and alignment done. You will never get it close to what it should be at home. Incorrect tracking and alignment can cause bad tyre wear and a number of other issues.

Don't take it to any of the big chains (kwik-fit etc) as they tend only to go from the manufacturers guidelines which will be completely different from what you need as you are lowered etc.I know this from experience, most places refused to even try and track mine as it was lowered and I wanted a touch of camber. The first place couldn't even get their equipment on it as it wouldn't fit under the arch.

Get it to a good independent tyre/tracking place and get them to do it, good places will be able to track it to custom settings including negative camber if you ask them. It should cost you in the region of £30-60. If it hasn't ever been tracked or aligned since being dropped on coilovers, it will probably be way out anyway.

Sounds like that should get you sorted for tracking. Arch Enemy (Arch Enemy) are the people to speak to for rolling, they should have an agent for your area. They seem to be pretty reasonably priced.