No recommendation on a stove but a different perspective, especially because northern MN is my home. The perspective has a focus on the heat you need as related to firebox size of your prospective new stove. With this perspective you can calculate quit easily how big your stove needs to be.
You say
Next take your typical wood and weigh out the 10 hours weight of wood you need. See how big the pile is, and that will be the quantity of wood you will need to load into your prospective new stove to achieve your goal. If your new stove is more efficient than your current stove, then adjust accordingly. If your old stove is 65% and new is 80%, then 65/80 = 0.81, and your adjustment factor would be pounds of wood x 0.81 for your new stove.
Keep in mind that well seasoned wood (20% MC) and an interior flue temperature exiting the stove at 400F has a heat content of 6050 btu/lb. If your 10 hour wood load weighs 40 lbs (4 lbs/hour x 6050 = 24,200 btuh), then don't believe anyone who tells you a couple of splits will last while you are gone at work, unless those couple of splits weigh 40 lbs. You can't get more heat out of wood than the btu content of the wood.
You say
You need to answer how much wood in pounds are you burning per day to get the heat you want? Divide that weight by 24 and you have your pounds of wood per hour that your stove (or your new stove) needs to burn. And if during work you are gone 10 hours until reload, multiply x 10.... if I keep it around 450 to 500 stovetop temp it will heat my house to 70 to 72 until it gets below zero and then it will not heat over 70.
Next take your typical wood and weigh out the 10 hours weight of wood you need. See how big the pile is, and that will be the quantity of wood you will need to load into your prospective new stove to achieve your goal. If your new stove is more efficient than your current stove, then adjust accordingly. If your old stove is 65% and new is 80%, then 65/80 = 0.81, and your adjustment factor would be pounds of wood x 0.81 for your new stove.
Keep in mind that well seasoned wood (20% MC) and an interior flue temperature exiting the stove at 400F has a heat content of 6050 btu/lb. If your 10 hour wood load weighs 40 lbs (4 lbs/hour x 6050 = 24,200 btuh), then don't believe anyone who tells you a couple of splits will last while you are gone at work, unless those couple of splits weigh 40 lbs. You can't get more heat out of wood than the btu content of the wood.