That "Playboy" appears to be the same as the one offered by both Aveox and Spirit of YesterYear - span 67.5", wing area 571 sq. in, wing loading 7.5-9.5oz/sq. ft., weight 30-38oz.
An '05' motor is, I think, the same as a Speed 500-600.
My suggestion is to send an e-mail to Kirk Massey at
www.newcreations-rc (
[email protected]) - he offers both those kits in his catalog, and I would assume that he could give you the best information on what to get for your aircraft to get it in the air.
Cheers, Phil