I'm setting up a top feed drip system for my tent. I would like to water/feed only every other day like I do now using just soil. Would a 50% coco, 30% soil, 20% perlite be a good mix and stay wet long enough,? Also would a 750gph mag drive pump be enough to push through about 15foot of 1/2 PVC and 9 15" drip lines?