What Chuck said is very good advice. I wanted to comment on the kit you are looking at. While Hanger 9 had put out a trainer that looks like a P-51, what you are looking at is a far cry from that and definitely IS NOT a plane to learn to fly on. If you are dead set on the P-51 then take another hard look at the Hanger 9 P-51. While it hasn't been done yet (not to my knowledge at least), converting this plane to electric should be fairly easily. You might consider something along those lines. Otherwise you'll want to go with a more "traditional" trainer to learn on.

Ken