Joyce, IMHO this is probably the best upgrade you are going to do to your home and of course you want it done right, the first time.

You will want to consider a mini-split AC/Heating system put in so you can enjoy the room all year round. Additionally, think about having the flooring put down before the finishing occurs...it looks neater, again my opinion.

Finally, take a good long hard look at the type of tint in the windows. I know someone that got it too dark and they hate it. It is a personal preference, but take the time to explore the different options and what suits your needs.

Get at least 3 of the big companies out to give estimates and ideas. The good companies will take care of all the review board paperwork.

Katie