This is my second LC Cruiser I've made so far (a 3rd one will be out soon). It has the capability to bring 6-8 tons of cargo to the surface of Laythe and fly back, all Overfloater style. I've made a mission video with a small example payload:
Download (Mirror):
http://www.mediafire.com/download/p21or00v1hjnx3n/LC Cruiser II _Ethos_.craft
If you show interest to my Cargo SSTOs, you can find a forum thread where the new stuff is posted first: