Hi folks at what level should i even attempt to take these two on right now i am at level 10 and am getting 2 hitted before i die was just wondering when it is wise to try and save william and the others

You can probably take them out in the late teens for character level (they are about level 27), with a little luck and the help of your creature (if you don't have it yet, you can in the next couple of levels; check out the mine to the far west of Lovis' tower). However, if you do get upstairs early, there is a tougher fight getting out of the tower.

This does not need to be done until after you have the battle tower (in fact, in DKS the quarry tower is locked until then, so you can not get in early even if you want to).

Level 10? Don't even attempt it in Ego Draconis, you literally won't be able to do damage to them.

I'd wait until you were level 22 at a MINIMUM, after getting the Battle Tower. Ideally, hit them at level 27 or higher, if you want the guild master to stand a chance at surviving.