Hello to all recent replies, my apologies for not responding sooner, just inundated with my job.
Gator, Thanks for the feedback regarding FSQ-106, years ago I had the second generation model and dabbled in some brief imagery when I realized it was not my cup of tea. One hell of a petzval design, built like a bomb.
Gavster, Thanks for your feedback regarding your preference to flat field, duly noted.
AstroJedi...... Thank You for taking the time to acknowledge my request for someone using an FC-100DF, I noted your image train included an AP focal reducer attached to your diagonal, one of my initial concerns was just how well it would work with a 3rd party focal reducer, you answered my question, in fact I have that exact same FR with a AP maxbright diagonal, prior to ever giving thought to NV. So you saved me a couple of bucks, confidence not to have to run the gauntlet of experimenting with expensive components. I would welcome a conversation, I will PM you if that is okay with you. As noted I am in NJ where White Zones rule and if their was another category for the bortle scale it would be called New Jersey.
Thank you to all for your most recent replies and Greatly Appreciated.