my $0.02 (noted from other threads that you have the D50 kit)...
wide - your D50 kit lens is 18mm at the wide end already, do you need to go any wider?
tele - more worth your while getting a reasonably priced 70-300.
fe - one of those lenses that after you play around with, more often than not, ends up at the very back of the dry cabinets, if not on the B&S.
sorry, no sample shots with a FE converter.