Activity Level Question

CM9178

I'm trying to accurately determine my activity level. I've always had it set to sedentary, but when using the IPOARM spreadsheet, it asks for additional hours of walking throughout the day.

I drive to work and start at 8:30 am. I sit at my desk pretty much all day, and leave usually around 3:30 pm to drive home.
When I get home, I do some stuff around the house -nothing strenuous, cook dinner, etc. Then I'm usually on the couch from about 7:30 pm until 12 midnight. But that time between like 4pm and 7pm I'm usually doing something moving around a bit.

On the weekends, I'm usually up around 9am and go to bed around midnight. During the day, I typically do whatever around the house, or run errands, grocery shopping, etc. Again, nothing strenuous, but still moving around. Then, probably sitting for at least 4 hrs at night.
At the present time, I am not doing any exercise though.

On the IPOARM spreadsheet, I've been using 7 hrs of walking/moving around per week but I'm guessing it should be more.

Figure 3 hrs per day x 5 days = 15 hrs plus another 20 hrs or so on the weekend, so that's like 35 hrs of doing something other than sitting/doing nothing.

With my current settings, it says my TDEE is 1917.
If I change that to an additional 35 hrs of moving around, it says my TDEE is 2043.

Should I use the higher TDEE, or a number between the two to be safe?