Loose sandy soil is not going to hold water very well at all, I would guess that anything you plant in there is going to have to be drought resistant. Clover is about the only thing that comes to mind for a plot like that, maybe brassica, which is drought tolerant also.
If you can, I would wait with your planting until late summer, around middle of August. If you try spring planting clover more often than not you will have weed issues. Wait until August, then work up the ground. Spread your winter rye(NOT RYE GRASS) roll or pack the soil, then spread your clover seed and roll/pack again. The rye will come up very quickly keeping the weeds at bay and your clover will start growing shortly after that. Good luck.