Right now I only have 512mb in CF. I would probably end up with 1G in SD. which would be ample for the time being.
Lenses, I was looking at the 18-70 DX and a either 70-200 or 70-300.
Yea, if you will only be shooting in jpeg mode, 1gb on a 6mp camera is pretty huge. In NEF mode, however, I only get about 180 per 1gb card. Also, just more food for thought - it's better to have four 1gb cards, than one 4gb card. Reason: If the 4gb card fails, you loose all your photos. Card failure does happen.