in order
yes, you are likely using too much lube. You should probably run a few Q-tips up in there to get the potentially accumulating lube out of the die.
Primers - they do not look flattened at all, no real visible smear on the case, no visible ejector marks on the case, so I would say no pressure issues visible from those factors. Cratering, by itself, is not necessarily an indication of over-pressure. Hard bolt lift, brass smear, ejector marks, in combination with cratering... is getting you much further down the road to over pressure.
I would suggest you consider having the bolt bushed by some one like Greg Tannel, or someone else qualified. I have two rifles that have shown cratered primers from day one regarless of loan. I will be sending them to Greg who returns them very quickly for customers (within 2-3 weeks) according to folks that I shoot with who have used him recently for this very service.
Jeffvn