In Florida it means you should be staying in the I4 area or even near Kissimmee. This places should give you a 5-10 mins ride to the parks. Go to booking.com and get some ideas as to hotels, resorts and other accomodations facilities in & out of disney.

As for the tickets I would suggest to check your timmings with the timmings of the parks and try to plan a 1day per park, since they are huge and sometimes even 1 day is not enough.

There are some tickets named "value tickets" which allow you to get entry to say "3 parks in 3 days, and sometimes you get a little discount.

Since I do not know how long would be the trip I would suggest to do a little search on the internet on parks and maybe make a selection so that when you are going to get the tickets the places are already decided and no additional time is wasted on deciding "to which park should we go today" (and I had been there, it is not pleasant)

Also a travel agent could help you on the tickets for the parks since they sometimes have access to certain promotions

Hope this was helpful and do not hesitate in contacting me on PM if needed