Rppfl, my H found a place only two months after BD, then took a trip for a week, then I took a trip for a week and a half, and by then he had moved out. It was very fast, but I can truly say that it is MUCH easier with him out of the house, even though it feels more finite and bad in other ways. I think you will find that you have more peace without having to navigate his emotional state on a daily basis.
Also, it gives him a chance to miss you and what you have provided for him. In the month since my H has been gone, he's said things like "I miss your cooking" and "I miss our friendship." Of course, these proclamations don't mean that he's coming back, but without the physical space of not living together, he probably wouldn't be missing those things.
Regardless, it will be an opportunity for you to have space for yourself -- and to maximize YOUR free time. Enjoy it! With three kids, when was the last time you were able to go out and have fun just for yourself?
M: 43 H: 39 D: 14 Married 15 Together 16 BD: 6/2014 S: 8/2014 OW revealed 10/2014 Instigated dissolution 12/2014, in progress So over it!