I'm going to do it one step at a time.
Step 1: get an electrician to install a new service panel with full home surge protection.
Step 2: Install a dedicated circuit for living room HT, which will be in the closet behind the TV wall.
Step 3: Replace wiring to the rest of the house a little at a time, adding more circuits than there was originally. Right now the Kitchen, dining room, living room and a bedroom are all on the same circuit. Also, add some for additional lighting in the living room (currently pole lamps only).
Step 4: Add another dedicated circuit in a bedroom for 2nd HT location.
