This is good advice. If I could recommend 2 books to read for all snake keepers, I'd tell them to read THE COMPLETE BOA CONSTRICTOR and THE COMPLETE CARPET PYTHON.
A lot of people assume a "schedule" for feeding is something to follow to a "T". What most forget about wild snakes is that they don't feed on captive bred rodents. Wild prey is lean, and contains far less fat than something a snake would eat in the wild.
Evenstar's conservative feeding schedule takes into account that the above is true and that most people over feed their snakes.
Personally, I feel everybody's goal should be to have a boa that lives at least 20 years.
If you look at anything written by Gus Rentfro, you will understand that well cared for BC's are apex predators when they reach full size, and the older they are the BIGGER they are.
I think Kali steers people in the right direction when offering feeding advice.
That is a nice looking snake you have there.
Edit:
I just noticed it was you and that you already have a BCA.
Nice addition and keep the pictures of both coming!