:P eheheh...
well, a Nidoran is a cute starter. ;)
but you can also add a Sneasel, either making it battle you or making it wanna join you.
having two starters is really a unique feature in a hack though... maybe make Nidoran your main starter, and while you are wandering around the first route, a Sneasel joins you... :)
it is up to you though...
I am just expressing my idea... :P