We opted to spend money on tuition for a top private HS where S and D could be around other similarly aged, bright and motivated kids. S took many of the APs offered and even self-studied for a few more, plus took a college course when he was 14 over the summer. For our kids, we and they were happy to start college with their age-mates.
It sounds like others have found starting precocious kids in college at very young ages worked for some and not for others. Likely there are many paths and we all chose our best with the info available. Sorry, I do not specifically know the program you are considering.