Do you have a writeup of your setup? Do you use lead acid for your batteries?
Besides the money issue, the biggest concern I have are balancing the batteries, getting the right inverters, keeping the panels clear and figuring out what inefficiencies are during the non-summer seasons.
I'd check out Lithium Solar on youtube - he's got a fairly comprehensive set of videos on almost every topic regarding batteries, inverters and general setup.
Besides the money issue, the biggest concern I have are balancing the batteries, getting the right inverters, keeping the panels clear and figuring out what inefficiencies are during the non-summer seasons.