Congrats on your new home!

Most studios have floating floors with hard surface (no carpeting) because once you lay down carpet in the room you have no control over acoustic treatment. The best idea is to have hardwood/ laminted floor with acoustic treatment on the ceiling right abovee the mix position. After that, you can treat other parts of the room floor with area rugs.

You will also need some treatments for the walls. Start off with Bass Traps in the corners of your room and then add some broadband absorbtion behind your monitors and on the wall right behind your mix position. Again, the room treatment really depends on the dimensions of your room, your mix position and so on.

I disagree with the comment about not needing acoustic treatment if you are recording electronic instruments. The acoustic treatment is needed to listen to your mix as clearly as possible. If your listening environment is not good then your mixes will not be good. There is really a reason why professional studios spend thousands of dollars on acoustical treatment and it shows in their recordings.

You should check out recording studio forum here for a lot of information about studio builing and acoustic treatment:
http://www.johnlsayers.com/phpBB2/index.php

Hope it helps!

Shaz