I just did an owner-build in Winter Garden, this price looks pretty good for your design with a builder.
A couple things you may think about...
Get more detail on the filter. With screen enclosure, 200sf will work for you, but make sure they aren't undersizing it.
I would personally skip the autofill and save the money. With our humidity and rain, you really shouldn't have to add water very often, unless you have a leak... which will be masked by an autofill. I am currently dealing with a leak and probably wouldn't have noticed too much without really scrutinizing my bills if I had the autofill.
Most here will say to skip the vac line and use a robot. I did, my plumber thought I was crazy though. Just something to think about.
Agree on getting the intellicenter
Check the plumbing size, with that large of a pool, you'll want upsized plumbing most likely, also, 6 jets may be lacking in the large spa (I have 7 in my 7x7 spa), along with that though, you'll need pretty large piping to get the flow you will want. You'll also probably want an air blower on the spa.