Yes I m aware of tat, but for the time being I guess my 28-80 or 18-270 can still help abit.
28mm is still quite tight on a crop.
24mm (FF) is best suitable for table shots imo.
it might be worth for u to rent a FF body + 24-70 (for the wider aperture) on the wedding dinner. plus your own D7000 + 18-270 for general shots in the day.