I have a 0 MOA Spuhr... I don't think you'll regret the buy. Loctite is your friend... yep, I use the red one

You might wanna keep in mind though... if you plan on upgrading to a scope with a 34mm tube... you'll be banging or scratching your head, but I do believe these mounts hold its value if you do need to turn around and sell it.

I think your set up is fine without a Spuhr.
Need a bubble? http://www.ebay.com/itm/US-Optics-Ra...item486986b406
Spend the rest of that cheese on a trigger, get your boom stick trued, change out the bolt handle..... or get an Atlas bipod

Either way.... have fun with it