I am replacing a main bathroom shower with 2 bar wickes pump and mixer valve. I want to eventual use same pump to supply my ensuite shower. the hot and cold feeds to the pump are ready to connect. from the existing feeds. But i want to run these supplies to both shower with the old pump(wall) still inline can i supply the ensuite shower with two one pump feeding a second temporarily untill i can change the ensuite shower with a mioxer vavle the same as the main bathrrom? or will it cause problems with one pump not coming on or too much pressure from fisrt to second pump, can i add an inline reducer coming from the first pump to the second to limit the flow to the second?