I'm late to the party, but I really like the idea. Just curious though, is there any specific reason you chose the teams you chose? It seems like the system would benefit from only playing the 5 (or 4) best 2q teams in the league. That way you don't have to take any personal feelings about a teams bench into consideration.
Right now that list is:
TEAM - avg 2q home margin
GS - 8.1
MIL - 5.1
MEM - 2.8
HOU - 2.7
DAL - 2.6
As of mid last week, I began doing the same thing this system is doing with only those teams at home. You can follow here if you'd like.
https://docs.google.com/spreadsheets/d/14J9uiTygGhrVpSse5HWOV83PlAy3pbMbZf7Tq21UZr4/edit?usp=sharing
EDIT: As you can see in that link, I'm using painfully low unit sizes. Mostly because I don't have any mathematical proof showing that this is going to be successful.