sunshine_eggo
Happy Breffast!
After researching some I've decided most likely against AC coupling as this will be zero export without any interconnection agreement. I would just go DC coupled with multiple SCC's if I did go with Victron. Still, the AC coupling would be a good fit as loads would be during the day and having the 2 Quattro's AC coupled would work fairly well with surge. It still might work well as battery bank to PV ratio is about 7 to 1 and would most likely only hit full SOC late in a day. Battery bank will be 56Kwh and PV will be around 8Kw. I do have another array I might divert to shop.
I might consider a hybrid system with some DC and some AC coupling but not sure how well that might work.
I already have the 10kW worth of Quattros. If I find I need more power, I'm stuck with another pair of Quattros out of the wallet. For < $1500, I could get 8kW GTI for around $1300, and I already have the panels. I think it makes sense for me.