I assume that you are developing more text than is now on view - I encourage you to look at the City of Cambridge (Massachusetts) mechanism for single transferable vote in selecting its School Committee and City Council.  Cambridge has eighty years experience in making this work, it's highly popular with the citizens there.  They dispense with any primary, going straight to the general - this should probably be local option in Virginia, but mechanisms to enable primary/no primary single transferable should be looked at.  I don't know whether these regulations would be the right place to work out a process for shifting from a staggered-term arrangement, like that in Arlington, to simultaneous election of several office holders, but if they are this should be considered.