I'm sure you'll be happy with your choice as many people here seem to like their P61.
Having said that, I'd just add one last bit of food for thought:
https://www.hearth.com/talk/threads/poll-how-many-bags-do-you-burn-on-the-coldest-days.121035/
That's a thread I started with a poll, asking how many bags of pellets people burn "on the COLDEST days". That was right when we were getting the polar vortex around the country, so the amount of pellets people were burning should have been fresh on everyone's minds. 85 people answered.
Only 11 of those 85 said they burned 3 or more bags a day, and several of those were actually pellet furnaces and boilers, not stoves. Even a 45k btu stove can have a 3 bag a day habit on the coldest day. For 2/3rds of the respondents, 2 bags or less was the most they burned on the coldest days. That's only about 27k btus. Seriously, most people here on this forum could get by on the coldest days with a 40k btu stove, according to their own votes.
Of course, as I think I said in another post, with your needs, you have lots of choices. Don't think you have to get the biggest stove. Bigger stoves have more areas that need cleaning, weigh more and are harder to move outside for an annual clean out, etc. Bigger is not always better.
Remember, there are no wrong choices.