That's already a damn interesting compliment of modules...yeah, do the Varigate 4+, for sure. Also, fix the mixer and VCA lack with something like an Intellijel Quad VCA...does both with a lot of configuration options and the price is right on it. That way, you can make the uVCA exclusive for CV use and only use an extra off of the Quad VCA for CV duty when absolutely necessary.
Another sick and twisted mixer idea: a 4ms SISM...? Could be entertaining for scrambling CV signals...