how about a shift in macros? less fat, more protein and way more carbs. with a 4000 calorie diet, 15% is 600 cals from carbs, i.e. 150 grams. and 20% protein is 200 grams. personally, id shift the marcos. another thing, and don't get me wrong, i LOVE starting strength. LOVE it for beginners. but it isn't necessarily the ideal program for hypertrophy, particularly if you aren't a novice lifter. possibly shifting to a joe defranco styled workout, or even a classic bodybuilding-styled training program might suit your goals better. how old are you? how much lifting have you done throughout your life?
I have a lot of hard miles on my body from before I realized I'm not 100% invulnerable. Now I just think I'm 75% invulnerable. -Mr. Anthony