Did you re barrel that gun? I remember it being stainless in an older thread.You could certainly scoot the riser back 1/4" or 1/2" and it would allow you to remove the bolt without taking the shroud off. It wouldn't affect cheek weld. You could also notch the riser. Honestly, mine is mounted where it is because I wasn't paying attention when I mounted it. I just decided to live with taking the shroud off instead of drill more holes in the stock.
Two spacers is plenty for me and I like a lot of comb height (I really smoosh my face down on the comb). This is a 42mm objective and you can see it's mounted pretty high; two spacers works fine there. I would think two spacers would be plenty for a 44mm or even 50mm objective depending on ring height. I think Victor sells extra spacers too if you needed them.
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