New studio design-Los Angeles

Hey all. Long time since I've been on here. I built my first studio back in '05 thru all the things I learned on here. I just moved from Orange County, California to a 4th floor loft in Downtown Los Angeles. I will be using John's design in sketchup http://johnlsayers.com/Stuff/Small_Studio.skp almost to a "T" with a few minor changes for my unique circumstances. A couple things about the project. 1. It's on the 4th floor of an old commercial loft bldg in downtown LA. I am currently debriefing myself on all the new information that you guys have come up with about floating floors (trying to keep from going cross eyed) as it seems the general opinion about floating floors has drastically changed since I was last on here. I have concrete floors, but it's not dampened by earth and I definitely need isolation from both those adjacent to and below me. 2. I have HUGE windows in this place. And on the end of the loft where the studio will be, there is an 18'x8' window that will need to be dealt with. 3. I have a question regarding Johns design (link above): Are the outside walls the typical double leaf, concrete, block etc.? Because it appears all the inner wall framing in his drawing is just for treatment and not isolation. Whereas in my case, my framing will be for both (meaning inner wall for isolation with treatment panels added after). Dont want to lose any more space than I'm already going to with the inner leaf. So thats it in a nutshell. I'm gonna go take some pics of the space and post em up on here so we (yes "we") can get this started ;) Lot's more info and details comin Cheers!

Ok so here is a pic of the space:

maybe leave some openings for windows so you can have some natural light and still keep a lot of the isolation.

Thanks for the reply. I've thought about the view and light. But this studio only takes up 1/3 of the space. There are 2 other huge windows just like it. I'm concerned that the expense, time and effort to keep a view in the studio is not worth the risk of isolation loss and loss of wall space for sound treatment and gear.

so make the windows tall and narrow so you keep something (if you desired) and still preserve most of the isolation. heavy glass (3/4" 19mm) will be useful here.