help with questions before beginning build

Hi all, I've researched extensively here (Lots of knowledgeable folks!!) and finally came up with a plan to build a studio in my basement. I may have the terms wrong below so bear with me. :D The room will be roughly 14x19. I'm going to do the staggered stud walls on a 2x8 floor board. The walls will have RC-1 on the inside studs connected to PAC RSIC-1 clips and acoustical tape between the clips and RC. 2 5/8" sheets of drywall with GG in between and 1/4" gaps on the edges filled with OSI® SC-175 Acoustical caulk. Studs will be insulated vertically with RC-19. The ceiling will have RC-2 with above mentioned clips, 2 5/8" sheets of gypsum and stuffed with insulation in the subfloor. I also plan on making my own panels with Roxul RHT-80. Now the big question. I keep hearing from my realtor to get permits because of egress. Then I hear from carpentry friends that they will not approve a staggered stud wall. (I'm in Delaware) Do I forgo the permits so that I can construct the room the way I want it? I'm curious to hear what steps others have done so that the project goes smoothly. Any help is much appreciated. Chris

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