[sgreco]

I would say you're fine for powering from four separate locations as opposed to one central spot on each side. If it shortens the chain runs and makes maintenance easier, it's a good trade-off.

I can't see the stress tests for this, but as a typical rule of design you want the most support in the middle, as that's where it'll break first. I would take out some of the pocketing in the middle, it'll likely only add fractions of a pound anyway.

Overall it looks great though. Your rendering and designing skills have gotten really good, great job.