Not sure how deep your pan is going, but your exhaust stack seems a bit low. You may want to raise it to just under the pan, so this bad boy acts like an arch. Since you are already going with galvanized, you could throw a boot connector at the top.
2014 Year 1, 1 large front yard shade tree with 3 taps - 3 quarts of the best syrup I ever had.
2015 - Convince In-laws and Neighbors, bought F-150 and bricks. 20 taps, 4 gallons in pretty bottles.
2016 -- More friends and neighbors, should add another 20 +, built temporary shelter as sugar shack. F150 traded for Ram 2500. Big Blue new barrels for 116 gal storage. 8 gallons Syrup.
2017 - Mortared Brick Arch with serving pans, no make that an 18 x 48 CDL divided flat pan, 48 taps.