Do you always have to put tall plats in back of your aquarium?

I have a 10 gallon cycled tank with aponogeton plants sprouting from bulbs. Okay, its about 2 rooted plants already grown and 4 more bulbs that sprouted 2 inches. One aponogeton is in the front, and is very tall, but its too late to put it to the back of the tank. Its about 14 inches high and the roots have spread widely. Do you guys always put the tall plats in the back? Is 6 plants [im adding more soon, maybe java moss and a lilly bulb plant] too much for my tank? I have a betta, a snail, 4 platies, and 4 shrimp. And 3 plastic plants i'll remove as soon as the rest of my bulbs root and grow.