I've made manned round trips to Gilly, Mun, Minmus, Ike, Dres, Vall, Bop, Pol, and Eeloo. I've sent probes into the surface of Jool and Kerbol, and one into interstellar space. All I wanted out of spaceplanes was an SSTO that can shuttle kerbals to my 250km orbit 24 Kerbal capacity station, and maybe also deliver satellites to orbit. But only one of the hundreds of spaceplane attempts I've made has gotten off the ground without flipping over and crashing, and it ran out of fuel before I even got close to orbit. It was nowhere near as small as your plane. I applaud you, good sir.