While moving away from a computer for live use is a legitimate need, as simple and stable as the needs for a MIDI sequencer are, why hobble your choices for a playback device by insisting it has a full sequencer on board? As long as it has SMF playback (and Markers would be nice!), trust me, there is NO onboard MIDI sequencer in any keyboard or module with a fraction of the power of a good sequencer like Cubase.

I would advise you do your sequencing on the computer still, then export the SMF to the module for playback. Trying to edit in detail, while staring at your composition through a tiny, non-graphical LCD screen is SUCH a return to the eighties! As long as you aren't taxing your computer with multiple VSTi's, and power hungry plug-ins, and multiple takes of audio, most computers will run a DAW if you use it just for MIDI with little hassle and instability. IMO, WAY less hassle than trying to do sequence work with such a tiny display and few editing options...

Sure, gig with the module, but compose with the computer...