All this is my opinion and should be taken as such.
I believe that this smoothbore should reflect what you want to do and should be your first decision. In example, I got a smoothbore musket from Loyalist Arms to use for practice for my hobby, N-SSA competition so that I don’t use my original Model 1842 musket except for competition. N-SSA competition drove my decision to get those 2 smoothbores. Now, I got another Loyalist Arms replica of a British 1839 musket to use for hunting since it was .75” to deal with the >800# boars on my farm. Again, purpose drove the decision.
Now, I’m ratholing $$$ from each paycheck to have sufficient funds to have the aforementioned “some weirdo hillbilly” make a trade musket based off of a trade musket that was recovered in Michigan. There are several posts here of my pursuit of pictures of this piece. The desire to have a Historically Correct (HC) trade musket has always been a personal itch of mine since college and the simple pride of ownership is the driving force. I know that the rendezvous recreation scene isn’t what it was in the 1970’s in Texas & Louisiana so, I’m under no delusion of my dressing out for such. There is a black powder club in the Dallas area that I’m going to join & participate with it in their competitions. So, it isn’t going to be just a wall hanger that the grandkids will have to deal with one day.
In summation, in my opinion and suggest to you that you refine your desired use for a smoothbore and your budget; then, work from there.
Hope this helps & best regards in your quest,