Just my 2 cents...I with yellows and even a pink in the recent past, I don't think Rufus is quite ready to go OTJ...he could be close, but I'd hate to see him lose the momentum, and sometimes trying OTJ too early backfires bigtime. As I mentioned in last night's condo, you will need to be extra vigilant about food - dry and HC treats could very easily cause BG issues. When a kitty goes OTJ, they are still diabetic (once a diabetic, always a diabetic), but their BGs are controlled by proper diet. Any straying from a strict LC diet could, and most likely will, cause them to fall out of remission.
I think more than anything you will need to track trends, rather than focusing on a specific number. IMO, 200ish is way too high in general, though.