Jim, Keep dosing your Ammonia daily to keep.
the biofilter going.. the day before you are scheduled to receive your fish. Drain the fish tank completely and refill.
One thing I would do is test the biofilter first. If the tank is truly cycled you can drain it now.. fill it up and dose with ammonia. . Test for ammonia and nitrites as you have been cycling. This will tell you if your biofilter material is colonized or its just bacteria in the water column working on the ammonia and nitrites. Alot of the time people cycle their tank thinking its cycled but then get a spike when adding fish and doing waterchanges. Thats from the increased load from the fish and from removing the bacteria during wcs.. you want to be sure the filter material is whats cycled.
Al