First, i can relate to your pups being in a crate 95% of the time. Bentley was as well 100% of the time for 8 months until my wife and i essentially rescued him. We have now had him 5 weeks and is still a work in progress. He was afraid to go out in the dark and stayed by the sliding glass door where he hunkered down in the light from the family room. i had to carry him out in the yard for him to do his business. This issue has been resolved. Bentley did not know what a toy or treat was. Loud sounds frightens him (espeically thunderstorms). And he does not eat from his bowl until last night which surprised the heck out of the wife and I. We now have him sitting and laying down on command. I could go on but I wanted to share this with you. As I mentioned, Bentley is a work in progress. We love him very much and he knows this and we are very patient with him.
Second, the link below is to the ASPCA on neutering. I hope this helps. In addition, you will find much information on this website on the home page links to information. Further, I have found members of this forum will chime in on discussions.