I forgot to say, sweet score! I recently acquired a 60 gallon with a stand, sump, some reef rock, and a bunch of extra stuff for free...the catch was that I had to adopt her big freshwater fish, that the reef rock had been outside for a while, and she refused to empty out all the gravel so I had to get a big tank that was 100lbs heavier down 20 or so stairs with a sprained knee. I could barley walk for a week but it was worth it. Lol.
Are you keeping your old tank or moving stuff over? I had a cycled 30 gallon and moved everything into it. It did a mini cycle that lasted a week, but my snails and hermit crabs survived.