How are you going to interface with the big boys like rockwell? I see you have drivers, what about partnerships? I know a lot of companies tend to only work with toolsets their provider "blesses", so having them on "your team" can help. You may have to pick favorites to win early deals/"synergy" (and may help with acquisition?)
I've worked with industrial automation in the past and have always enjoyed the technical constraints within it. I would be interested in helping you with pre or post-sales support/training/implementation for your customers if you need it. Email is in my profile.