I’d suggest getting another bucket (if you haven’t already got one spare) placed on the floor (preferably on castors on the floor) to drain (gravity) the wort into. Then wheel the filled bucket near to the FV on it’s work surface and pump the wort into the FV. I have 12 volt mini pumps and they will pump up to 4 feet easily but can fall fowl of grain/hop debris so by draining into the bucket, possibly through a sieve, that risk will be significantly reduced. The pump that I use does not self prime so needs to be mounted lower than the initial wort level. I’d fit a tap to the bottom of the bucket and connect the pump to the tap. That’s my two-penneth