I'm building a new inground vinyl pool and I'm not sure on the pump and pipe size needed. The main drains will be 90 ft from the filter and 1 of the 2 skimmers a little farther than that. I'm planning 1.5hp single speed and 1 1/2" flex PVC. I'm assuming that 1 1/2" pipe would still be okay, but do I need to up size the pump for the distance?