My wife and I separated and we are trying to arrange visitation with my two boys. I agreed to having them three times a week for six hours a day for the next two months. I told her that I'm going to want them more in the future. Am I setting a bad precedent? I don't have my new place set up for them to stay over yet but soon will. My wife is not going to want that to happen but obviously, I do.

What you really need to do is go to court and get a visitation order, in writing. Specify exactly what you want, both now and in the future. Don't verbally agree to anything.