While a scale P-51 would be a no no, the GP "Sweet Thing" uses a version of the Original UltraSport wing (Which is a version of the original Kaos wing).

Can you do it? As herbert eluded to, maybe. It depends on your personal skills, but I too would strongly recommend having a skilled pilot on a box with you.

If you have any doubts, get a good low wing intermediate trainer first like the Tiger II, the Sig 4*, or the GP Rapture.