1) why would Adams be "Governor General"? It seems, as far as I can tell, to be title invented for a Federal Canada OTL. I would have expected some different title, like President or Supervisor or Intendent or something.
2) boundaries with the Canadas. Surely it would be more important to deal with borders with New Brunswick - which was not then and is unlikely now to be ever (iTTL) part of any entity called Canada. OTL Canada was formed to give BNA a stronger organization, largely in fear of the US which had just used warfare to settle an internal dispute, and now had a large army that didn't have much to do....
2) boundaries with the Canadas. Surely it would be more important to deal with borders with New Brunswick - which was not then and is unlikely now to be ever (iTTL) part of any entity called Canada. OTL Canada was formed to give BNA a stronger organization, largely in fear of the US which had just used warfare to settle an internal dispute, and now had a large army that didn't have much to do....