I would wait till you get the lime. If you soak the rock in FW
it will probably kill most of your biofilter and you may have to cycle again (depending on the size of the rock).
Try a few PWCs, my aiptasia didn't get out of control until I slaked on my PWCs.
Also, I have had a "dead" tank for a little over a year, SW
and a filter, no light or food and the buggers have lived through that.