Yep. I think once you think about it a while you will appreciate your decision. Not only could you possibly catch that fish again when it's even bigger, but keeping that bass' genes in the water is a good thing. Bass that get that big are rare. It has a trait for that and it will pass it to it's offspring year after year thus making the possibility of another fish that size greater.
You got the measurements. Pic?? Take all that to a taxidermist and get a replica made.
Congrats!!!