seems to me you have A lot of work to do I have 2 years now the Sd1 and I still remake my midis from roland to ketron ...:-) If you are interesting About instruments definitions for the Sd1 for cakewalk I have A Compleete version
But You Have to live with out many goodies of roland in your midis like the huge midi liblary ,the variety of synth sounds, the electric basses , the Brush(forget the jazz midis of roland) & TR Series Drum sets, the "left hand" of your piano, the pitch bend in drums (you have to do this with NRPN now) and many more . Don't worry there are things that will keep you in Sd1 (is a Hard One way) like accordions, live drums, easy of use the hard disk, effects , guitars , vocalist, remix function ........... This forum is the best way to learn your SD1 good luck