I ended my last playthrough at SL66.
VIG 27, End 20, STR/DEX 31/31.
Higher END if you use UGS etc. 20 for most other stuff is fine though. I would just up VIG now to 27 and then bring DEX+STR up. 40/40 STR/DEX is pretty much meta.
Why is 27 VIG good instead of 25 or 30?