Considering tube Monos to replace SS

I am hoping for some input on compatibility issues with a possible mono block change. I am not even close to being an EE; I rely on my ears, but I also consider (and ask for help) on the more technical aspects of compatibility, of which I am no expert. At the moment my chain consists of a Manley Steelhead phono stage, into an ARC LS-27, into a pair of Bryston 28Bsst2 mono's, driving Wilson Maxx 2's. I have been considering tube monos for some time now, and am looking at swapping out the Brystons for a pair of VTL 750 mono's. My math says it works on paper (but I am not 100% certain). I am hoping some of you with much more technical expertise can offer your input. Hope Ralph or Al can chime in, as they seem to be the most respected experts in the tech end of this hobby. Thanks in advance for any info, and have a great weekend.......