Very nice... What is your barrel length?
I've done something like you and thought about going with the same ghost ring scope base as you but decided that the ring would be so low that I would have to jam my check to hard into the stock to get it to work for me.
The changes I did to my Rem 700 LSS in 375RUM = had the barrel shortened to 21" and installed a NECG Masterpiece banded front sight and the tallest fiber optic front post/blade that they have available, I installed Leupold QRW bases and mount my Leupold VX3 4.5-14X B&C reticle scope with QRW rings when I remove the scope I install a XS Sights tall Weaver backup ghost ring sight I glass bedded the action and adjusted the trigger to 4lbs I didn't want a brake so went with a Kick-Eez recoil pad.
I have the scope sighted in with 260gr Accubonds @ 3020fps (I can only get this velocity using RL17 powder in this short barrel) the second B&C reticle line down is dead on @ 460 yards...
I have the ghost ring sight sighted @ 50 yards and would shoot big game out to 200 with the same zero with 350gr Barnes TSX @ 2450fps I reduced the load from 2520fps was just too much recoil for a fast follow up shots if I ever needed it and I load 300gr Gamekings/Partitions/A-Frames to 2730fps and use RL17 powder for all bullet weights.
Here are a couple of pics of my 375RUM...
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Different scopes I was trying Burris 1X, VX3 2.5-8X B&C and the only scope I now use on this rifle VX3 4.5-14X B&C and I keep the ghost ring sight and a small screw driver to install it in the pouch on the butt stock....
Here is a pic of the 350gr TSX shot at 50 yards the lower hole was my first shot when I was sighting the ghost ring in I adjusted the rear ghost ring sight and the next 3 shots made one cloverleaf hole ghost ring sights are more accurate than most think they are.