There is no one right answer to fishkeeping. You have to work within the constraints that you have, but you have pretty wide constraints at the moment so not bad!! You can also try posting on FB marketplace or r/aquaswap to get rid of the current fish.
It's interesting that the smaller LFS's won't take the fish at all. My local LFS will take fish as a donation and attempt to resell them, but will not give the person donating the fish any perks for bringing them in. They explained to me that the effort of keeping tanks to take in fish basically balances out with how much they can resell the fish for, so that's why they don't give the person giving away the fish anything in return.
It also sounds like you have a couple of weeks to think before you make any decisions, and frankly, even after you make a decision, you can always change it up down the road. It's not like you're buying a car or selling a house here, sure they are sort of big decisions since live animals are involved,but at the end of the day in the scheme of things, it's not that big of a deal of you end up changing your mind
It's interesting that the smaller LFS's won't take the fish at all. My local LFS will take fish as a donation and attempt to resell them, but will not give the person donating the fish any perks for bringing them in. They explained to me that the effort of keeping tanks to take in fish basically balances out with how much they can resell the fish for, so that's why they don't give the person giving away the fish anything in return.
It also sounds like you have a couple of weeks to think before you make any decisions, and frankly, even after you make a decision, you can always change it up down the road. It's not like you're buying a car or selling a house here, sure they are sort of big decisions since live animals are involved,but at the end of the day in the scheme of things, it's not that big of a deal of you end up changing your mind