I would sugest a saddle similar to this one:
http://www.ebay.com/itm/Gyes-GS-06H-...item56466dd05d
I have one similar to this on my old road bike. There is no hard shell, just the lether streached over the outer frame. The tension can be adjusted and the cut out is nice on the body. You could eventualy pair this with the seat post above and it should be nice an comphoratable. hope this helps.