In FL you can have more letters/numbers. Personally, as-far as I go w/the custom tag is to get a license plate for the specialties, FL offers lots! My wife has a U-Miami tag (wife & daughter are electrical engineering grads, my son is a computer science grad), I have a firefighter tag, but random combo, as I don't want someone telling the officer, "it said, 'VBOOST!'
I like NOBOAST, NTNTYT, (think, Tina Turner in
Beyond Thunderdome), PARSEC, N2DVOID, UMLE8, BRNOUT, TENSEC, TEN2ND, BHNDME, that's a few I thought of.
http://www.flhsmv.gov/dmv/specialtytags/
Check here for your FL personal plate (7 characters max)
https://services.flhsmv.gov/MVCheckPersonalPlate/
All the ones I said are avail for motorcycles.