You would have to leave Loudoun County with the liberals and withdraw into a few precincts in the Valley and in the far south western corner. Loudoun County has gone Democrat in the last few elections. Loudoun County! When you cannot even get the Old Dominion to be reliably conservative, you have nothing useful for secession.
If you divide Virginia along the lines necessary to keep liberty for the rump you have a literal disintegration.
No one buys into the myth of "the lost cause" more than I do but I live in the 21st century.
Hypothetically, if VA stays in the USA then I would leave and go to the newly freed state(s). I get to vote with my feet. As it is now we the people have a one size(socialist) fits all FedGov, that is the crux of the problem.