Ok finally got these installed!
I tried the 6105s, had to turn them down and thought they just looked too big so I ended up with 6095s with the seasweeps one in each back corner with two mp40s mounted on each side of the back wall mid way up (60x34x21). The flow is amazing it solved all my flow issues. I have a nice gentle random flow from the mp40s then the seasweep comes through and gets them intermittently with a nice strong blast from alternating directions. It seems like since you run the powerheads at a constant speed (not supposed to pulse them) you seem to get a lot more flow from the same pumps.
These are definitely not for the rimless crowd, they are a little bulky above the water on a small tank but if you have a decent size tank and or a canopy they are awesome. It’s only been a week and I am all ready starting to see positive results in some of my Acros that weren’t as happy as they could have been with their prior flow.
On your peninsula I would say that opposite corners would be the way to go.