Don't apologize for your DP62. And don't assume that a mid-level VPI turntable is any better. Properly serviced and in a good plinth, your DP62 is a superb tt. I agree with all the others; it appears you would be best off with the high output version, given your present phono stage. I like the vintage "feel" of your chosen components.
By the way (from the Grado website), "All Grado cartridges now use a derivation of the moving iron principle which feature patented OPTIMIZED TRANSMISSION LINE cantilever technology, PIVOTED FIXED AXIAL STYLUS-GENERATOR MODULE, and Grado's FLUX-BRIDGER GENERATOR SYSTEM." So they are not MM; they are MI. This means nothing except that MI cartridges have lower moving mass than either MM or MC, which is a good thing and why Grado's sound so good, IMO.
By the way (from the Grado website), "All Grado cartridges now use a derivation of the moving iron principle which feature patented OPTIMIZED TRANSMISSION LINE cantilever technology, PIVOTED FIXED AXIAL STYLUS-GENERATOR MODULE, and Grado's FLUX-BRIDGER GENERATOR SYSTEM." So they are not MM; they are MI. This means nothing except that MI cartridges have lower moving mass than either MM or MC, which is a good thing and why Grado's sound so good, IMO.