It's a fresh and original idea, but I think not adeptable to HoI2.
A much better platform for the moon race is Civ4.
You don't have modding skills (neither do I), but do you at least have a concept, a vision what the mod should be like?
Thus far it's of course not very convincing.
What do you achieve by being the first man on the moon? In Vicky you could get a sh*tload of prestige, thus winning the game.
Plus it would be very boring with the capacity you can possibly have.
Say, you find a group of 10 people helping you, that wouldn't be nearly enough to invent completely new tech trees (what else besides space technology do you want to integrate?).
You would have to simulate all weapon techs form 46 to 75. Plus make it attractive enough to win the space race. How could you convince a player to research for around 15 years (!), only to get some moon-events?
I think most players would use the time to conquer the world instead.
So, if you're interested in getting this mod started, you might want to work on a real concept first.
This mod could be awesome, but it would have to be a major mod (imho) to be worthwile.
Good luck!