Lots of good info, thanks. I am using 2 subs with a minidsp ddrc-88a-bm so hopefully ill be ok in that regard.

Im pretty sure vibration wont be an issue, but we will see when im done building my baffle. I designed an enclosure for the speakers with sorbothane hemispheres for decoupling and sorbothane bumpers to stop vibration and sway.

The only part that worries me is the three year shelf life. I might look into swapping out for springs in the future or if the sorbothane doesnt perform well.