You'll be fine, I just did that with two tanks, a 58 gallon and a 100 gallon, in about 6 hours. It did take 5 people and three vehicles due to the size and weight of the big tanks.
Cold temperatures are probably the major concern. Keep the heaters on with the fish in the buckets as long as possible, keep the bucket covered, the fish will be spooked and try to jump.
ScepticalAqqarist.com says to keep the top 3./4 inch of gravel separated from the bottom, as they have different types of bacteria. Keep the gravel damp, but it can be carried separate from the water if that is easier. Actually you only need to keep maybe half the water, to ease any change in water parameters.
The filter sponge should be damp and well aerated, like in a plastic bag or shallow pan of water. Keep the temps OK for that also, it is alive.
Don't feed the fish for 48 hours before the move, they will blow off a lot of ammonia due to fright, worse if they have full tummies. Have a heater and airstone going for them while you set up the tank and gravel and filter.
I'd guess about an hour on each end and travel time in the middle. You'll be fine.