I'm gonna say probably not.
The trade-off you would be making by doing that would be choosing to pay your 15% long-term capital gains now and paying nothing later, vs paying nothing now and paying 15% long-term capital gains later on larger gains. BUT not all things are equal, because if you sell the stocks after you are FIREd and are not in the 25% tax bracket then the long-term capital gains rate will be 0% (assuming nothing changes).
So likely what you'd be doing is choosing to pay taxes now and nothing later, vs nothing now and nothing later. If you have reason to believe something in there is not true (maybe you'll be in the 25% bracket in retirement, or maybe they'll change the tax law so that capital gains are always taxed or something) then you can make your own decisions, but I wouldn't touch it.