I am renovating a master bath. Putting in a corner shower pan, 5 feet long by 4 feet wide. Installing a Grohe 16" rain head in the ceiling and hand held shower assembly. I want to put up 2 glass walls with out a door around the the outside. One wall 4 feet on the short end and 3 feet on the long edge. Leaving a 2 foot opening into the shower. If the shower head is centered 18" off the short wall with the hand held shower assembly centered on the short wall, will there be splashing out the opening.