Yeah, I think you're a fair bit overbudget there. If you went to an 8700 non-K you'd probably be at the upper limit of the system (65W + 105W) and could probably gain some headroom with undervolting. I still wouldn't recommend this combo with the 160W AC-DC unit. If you wanted to get a beefier AC-DC solution you could do the 8700 Non-K and P4000 I reckon.