Welcome Jerry. I'm leaving out of Northwest CT near where US route 7 crosses into CT from MA on Thursday morning the 8th, rain or shine. I'm going from there over to Newburgh, NY on Interstate 84. I will likely stop at exit 6 and meet up with another rider or hopefully two. I 90 is a might boring. 17 is quite a bit more scenic and almost as fast as 90. You and anyone else who reads this are more than welcome to join us. Brand / type/ size / color of motorcycle not relevant. Even trailers are welcome -- been there, done that too ;-) ) "It's all good."
I haven't looked at a map, but if you're leaving out of southern ME & I 90 is your best route, to divert to Newburgh then route 17, is maybe 25 or 30 miles longer than the I 90 route. See also MA Pike / I 90 to exit 2, to 102 west, then 7 south.
Plan B - if the guy(s) I mentioned above can't go, I would probably follow route 23 through the Catskill Mountains over to 17. I'd love to go back roads all the way across, but time won't allow, and so it's 17 for me.
If your schedule and routing offers you an interest in the above, I can provide more details if you wish.
It's a great rally you are sure to enjoy.