Butterfly for 55 year old beginner?

My dad has always talked about sailing with his childhood friend (and friend's dad) when he was a little boy. He never fully described the type of boat they were on but I'm guessing it was a very large one. I know how much he would like to get into it again so this year I wanted to try to find him a sailboat to surprise him for his birthday. Last week I found an old Butterfly (complete and in really good shape with trailer) for $500 and bought it.

My husband and I took it out yesterday...

Butterfly for 55 year old beginner?