ok I say enough with the suggestions/advice/thoughts yada yada yada... I now wanna see from your next post.. is what action you decided to take besides posting asking for more opinions!!
You have gotten alot of knowledge.... it's time to be practical and experiment with it.. dont be afraid to change whatever the shop owner had orginally done...
Be creative and proactive man.. and you'll be havin that 15mile radius bass bump you are so craving in no time.