Wow very impressive work for a first attempt at making your own pans, especially a flue pan.
Others will comment as well but looking at the space under your flue pan I think that will be too much. You want the floor of the arch shelf close to your flue pan bottom in order to send up the heat into the tops of the flues. In your current setup you may not getting your full potential out of the flue pan as the fire will just run underneath the flues.
Also what size is your pan inlet and outlets? Hard to tell from the pictures but they seem on the smaller size which isn't terrible but you will have to be careful drawing off syrup. If you draw off too fast the small outlet size won't let enough sap enter the front pan fast enough to keep your pan level up. On a 2x5 this probably wont be a problem but something to think about.
Other than that, very impressive work on the pan and arch builds.
Camp Wokanda
Peoria Park District
2023 - 210 on 3/16 shurflo, sap storage shack w/ 1100 gallon tank - 123 gallons
2022 - 210 on 3/16 shurflo, homemade vac filter & water jacket canner - 104 gallons
2021 - 215 on 3/16 shurflo, added 2nd membrane to RO - 78 gallons
2020 - 210 on 3/16 shurflo, upgraded hp pump on RO - 66 gallons
2019 - 150 on 3/16 shurflo, Deer Run 125 dolly RO - 73 gallons
2018 - 120 on 3/16 shurflo, 2x6 raised flue w/hood, homemade arch w/ AUF & AOF - 34.5 gallons