What if you could do this.
1. Tell your friend to hold on to the tank for just a while, until you can get some arrangements made.
2. Draft up what it would cost to set up a large FOWLR setup and monthly and annual expenses including water making, filtration, electricity etc.
3. Visit the Local Children's hospital, County hospital etc, and ask the CEO if they would entertain the idea of setting up a very large aquatic display in a prominent area where the kids could enjoy the display, offer your services as a VOLUNTEER, and let him know that you have a line on a really cheap and beautiful system that needs a new home. (show him a picture of the stand, tank, etc.)
If they accept, then you have a weekend job of course, but three things have happened.
1. your friend is rid of a tank that is otherwise hard to sell or place in another residency.
2. Your hospital gets an amazing fish display.
3. By volunteering, it becomes your tank with no expense to you.
That's what I would consider if you can.
Aaron