NEW BUILDING WALL, SLAB, FOOTER ETC. DESIGN QUESTIONS

I am planning to build a 28ft wide x 80ft long (exterior) x 15-16ft high (interior) studio on a 28ft x 148ft lot (see attached). I do not plan an ultratech or costly control room environment (G5 + Digital Performer); studio use will be 50/50 personal/commercial. I plan to focus on acoustic jazz ensembles. Please note the setback and street noise constraints. QUESTIONS: (1) Is there sufficient control room, storage room, meeting, and mechanical room space? (2) Should the est. 80 ft. building length be reduced a few feet to save building construction costs and permit 1 more on-site parking space? (3) Can I use a polished concrete surface for the live room so as to avoid wood flooring cost? (4) Since one 80 ft. side of the new building built against an existing 80 ft. long brick-walled building, must I assure that the studio’s new footer avoid contacting the existing building’s footer to avoid subsurface sound transmission? (5) Does 8 in. architectural hollow block masonry provide less sound transmission than solid 4 in. brick? [I plan to construct new, separately framed/insulated interior walls.] (6) Should the utility company provide me with a new isolated transformer feed, since the same power line/transformer currently also feeds the neighboring fast food restaurant? (7) Does anyone have experience using interior masonry split-face flute block for internal room walls? THANKS for any help or comments on any one of these questions!

you might want to post a quick sketch (scan in a drawing?) of the proposed site with streets etc. also include details on how you plan to use the facility - personal use? pro use? etc. lastly, you might want to get some sound level readings on the site so you know what kind of noise levels you're dealing with (level-freq). if you check the stickies on what to post you'll haev a list of the info people will look for in order to assist.