Help/ideas building pratice space/recording studio Ohio?

I am new to the recording world and work within Pro-Tools so far I am self taught and have enjoyed some success recording bands and collaborating with many musicians on recording projects. I enjoy it mucho and want to expand into a better studio environment expanding into Pro-Tools TDM system running Control24. This is a great time as I have investigated due to this being a new build the first issue is going to be stopping sound from escaping this room. The room will be 20X26 with 16" cathedral ceilings running next to my living room kitchen so I was working on soundproofing ideas for this wall? I just do not know what and how to design a great working space that can double as a live practice space for the bands and work as a good recording room. I want to put in a control room for mixing/listening, vocal booth & drum room since I am a drummer with a multitude of percussion instruments Electronic RolandV drums 2-DWacoustic kits etc. I would like some sound proofing ideas for the structure and a interior design idea that would work in this size space, the plans are not yet completed so I can't provide much more information other than 2- doors one between rooms 1-seperate entrance, windows(None in design) skylights in ceiling on concrete slab. Please feel free to give suggestions and can tell you I never realized how much thought needs to go into a project like this, I was told 90% planning 10% construction. This forum has helped me realize many sound related issues that I could have corrected in my current set up & learn from the many who have posted on this forum. Thanks Mr. Sayers you have given me information that will help no matter which way I go. Thanks Timothy J Bartoszek http://www.rocksyde.com