If you think your ready - Go for it!!

If it were me however, I would build one of the 4* Sig planes to get some low wing experiance.

You sound really excited and for what you've done so far, I think your going to make a great pilot, so lets not rush it. Your flying without an instructor and your first serious crash hopefully is in the far distant future.

The Spit is a great plane, but, I think you could use some low wing flying experiance.

Good luck -