I've been collecting parts for some time and I'm about ready to build my splitter. Would you guys, please, double check my calculations. I've got a Casappa PLP20.16 pump [1.03 in3/rev, 3600 (max)psi, 3000 (max)rpm]. I calculate 13.38 GPM. Does 28 HP sound right? The pump is brand new and was...