I'd like around 3-6 levels of play, that way players can get a good feel of what the game is all about.
I don't know about the races and classes; personally I loved the variety, even when I was just starting out, but I know I was more the exception than the rule and it can be a little daunting for new players, so maybe cut it down to the base 4 (dwarf, elf, half-elf, human).
As for classes, I think the five that embody the ideas (Cleric, Fighter, Ranger, Rogue, Wizard) would be the best to cut it down to, but including any of the others would not be a bad thing.
Tokens and dice sets would be a good idea, as would a map pack. Minis might be a good idea if you just include the five PCs, including all the monsters might be a bit much.
I'm thinking the adventure(s) should all take place in generally the same area so the new players have a familiar setting while learning the rules.
That's basically all the ideas that I had, but I'm sure whatever you do with it will be fantastic.
