Quick update on this - started the job and done my first 4 nights away!

Going to wait for the i7-8700k - apparent release is this week so will order from PCSpecialist or similar and get the full desktop CPU, I think it will work fine with the extra cores.

In the meantime, I've managed to plod around running 5x toons on a Surface Book, it's not ideal but can do WQ and a little light wPvP (random people attacking whilst questing.. wouldn't like to be in fights that I need more coordination).

Have had a play with LiquidSky.com (some sort of cloud VDI for gaming) will let you know how that goes.