I'm going to parrot what gocubs said and I would either go with a spa or just the pool, not try to 'emulate' a spa within the pool. The pool will never have the intimacy (one thing that really makes it for me) nor the heat that a spa would have.
You need to sit down with all parties involved (family etc.) and think hard about if you would use a spa or not... we personally put in a large spa and made it more of a feature because we know in the coming years, my parents will use the spa more than the pool and will use it year round. The year round thing isn't an issue for you in Florida I'd assume, but, you need to look at all things that go into the long term enjoyment of the pool/spa.
You say you already have a shelf entry with bubblers so you have an area in the pool already that gives a 'water movement' sensation. Personally I think a bench with jets on it would just be that, a bench, with some moving water on it. Now... in your design, if you had a sort of alcove within the pool layout, I could see adding jets into that and making that area of the pool a 'bubbling' corner of the pool, but the more open anything is to the pool, I would think it's just going to be jets shooting out into the open and you'll lose that surface agitation that gives you that 'spa' sensation.
Hope that made sense... hehe.