This sounds like a great plan. The only product manufacturer that has me a bit concerned is Tripp lite. We went through a period years ago where we deployed their batteries and mostly pdu's to about 20 projects. Every single project we lost access to the pdu remotely and had to go through painful firmware replacements and unit swaps. This was very painful of course losing access to a pdu which entire purpose is remote access of power management, but what is worse is after at least 30 bad units Tripp Lite still doesn't know what is wrong.
We cleaned our warehouse last month and did a full inventory. We found a few Tripp lite pieces brand new that a few people at the office wanted to go office space on. We opted to put it in the eBay pile.
Hope this helps with a very small but critical component of your system.