Half-Breed/Super-Munchkin question

[tremorlaine]

I have two questions regarding these cards.

1) If I have an Race or Class card in play and then play Half-Breed/Super Munchkin to become a "super" whatever can I in the future add a second race to become two Races with all disadvantages or vice versa...dual Race to a super Race...on the fly. We suspect the answer is yes.

2) Can I play a Half-Breed or Super Munchkin card if I don't have any other Race or Class cards? Normally I'd say no but there is the possibility of being a "super" Human. There is no corresponding benefit for a "super" no Class.

3) Is it just me or have I typed Race so many times that the words no longer looks like it is spelled correctly?