Just an personal opinion why do you want to come up with surname coin. If tomorrow this project fails or scam then entire population of Guptas in the world are put to shame because of few people who are originating this coin.
We chose Gupta for it's legacy as a Dynasty in an era of prosperity. There probably is a reason why it has become a surname later.
This is why we chose the name:
http://www.coin-competition.eu/history/the-golden-age-of-indian-coinage-the-gupta-coins/