Before I had Bills 2x4 I had his 2x3 and the preheater on that sat over the rear of the pan. That caused condensation which drip back into the pan which than reduces your boil rate. Thats why when I bought the 2x4 I requested he build a frame off the back so that preheaater was over elbow this requires me to run a small length of stove pipe off back of evaporator before the elbow in order to get clearance. It works ok probably does not warm sap quite as much but there is no condensation running into pan. Last year was lost season due to weather but the year before which was my first with this new rig I could not keep up with 200 taps at the peak run so unless these new pan turns some fancy numbers I say there little chance of you handling 300 with a blower. I am hoping that the new pan might solve my peak run problem on 200 taps. I burn mixture of wrist size and smaller hemlock and same size hardwood this produces a ton of heat.
110 taps W.F Mason 2x3 and two turkey friers for finishing
2011 expanding to a Mason 2x4 with a blower increasing taps to about 200
2011 Hurricane Irene rips thru my small sugar bush cost me to lose 20% of taps
2014 I have reworked my lines for 2014
32 taps on 5/16 line with check valves
57 taps on 3/16 line with check valves
55 buckets with total tapped trees of 144