There is no safe
vcore. Potentially, anything over and above the stock
VID **could** cause damage.
The amount of
vcore that you use, should depend on how good your cooling is, how comfortable you feel with the temps, and how stable it runs.
Theres no sense in chucking 1.6v at a
cpu just to get it to boot into windows, so you need to find the happy medium, and maybe go for a little less
vcore and a little less speed.
Once you really get to know what makes your system tick, then you can start tweaking stuff.
Anyway....
Yes, those
BIOS settings look good to me. The BSODs can be a few things, but can you please list all your system specs in your profile - extra options and I'll be able to help you better.