Seeking input on building 2" x 10" vs 2" x 6" exterior wood wall stud system for ranch rebuild in PA. Currently the wall is 1970's 2" x 4" construction that will be completly removed (wood not worth reusing). Slab floor that will be built up & insulated. Have been incorporating double studded wall systems, in pre-owned homes, since 2004. My question: to limit time, lumber waste, & labor costs (including insulation cuts, etc.), why can I not find any information on building one 2" x 10" exterior wall vs. two double studded walls? I am planning to do the one 2" x 10" wall unless this concept is wrong (goal: deep, interior window sills & high R-value insulation). Yes, staggering a double studded wall system will reduce thermal breaks, but this is one, south facing wall & again, the other reasons listed. Any constructive recommendations would be greatly appreciated. And no, I am not a builder, just someone who oversees the rebuilding/financing of homes in cooperative partnership with our contractor (this is the 3rd & last one!) & is passionate about sustainable, green building techniques & lowering energy usage, but not in a fanatical way! Thank you & I look forward to your thoughts.