Okay, Chad, here's what it looks like I'm going with. It took me longer than I'd planned because it's so frigging cold here...shoot a few then go inside, wipe my nose and warm my hands, then do over. I paper tune then confirm it with bare shafts.
Anyway, it turns out this one likes the same recipe my Kanati did. My go to with that was a 29.5" arrow, 500 spine, 100 grain insert, and a 175 grain point. The bad news is I had to cut my shafts to 28.5" to tune for my 48# Bama and 50# Orion, so that's mostly what I have around right now. If I go 225 upfront they tune fine, but overall weight tops 600 grains.
The 600 grains is doable, but I'd have to retrain my brain for shots over 15 yards. I hit about 4" low with them at 20 yards. I've got some shafts on order, so I'll probably just go with 29.5". I killed a buck with my Kanati with that combo with a Delta up front. At 22 yards, it zipped right through him.