I have Sidney Perley's genealogy of the Francis Plumer line and would be happy to send you what it says about your particular line.I can also check out the vital records for those Plumers who were in MA, but not for the NH or ME families.
Perley agrees with what you have in the later generations, but there are differences toward the beginning.One, which may have just been a typo, is that Perley has Jeremiah b. 1747.But at the beginning of the line Perley has Francis>Joseph, b. abt 1630>Joseph, b. 1654, Newbury, Essex Co., MA>Aaron, b. Jan. 16, 1692-93.
I'm a little rushed right now, but if you want me to I'll be happy to send you what Perley has as well as the MA records. The MA records may help with the families of spouses as well.
Not only are we very distant Plumer cousins, but my parents lived in Damariscotta for many years--I had no idea there were Plumers buried there.