My son's BF is long distance and doesn't see him very often, so I have worries like you. The conversations that you are having sound good, nice and simple. Your daughter will take cues from you. If you don't make it a big deal, just someone else who loves her and wants to see her, she won't see it as a big deal. That's how you present it to daughter, even if you are worried about impacts. Don't let her see it. Treat it the way you would if one of your relatives was coming to visit her. No talk about the future, or any big build ups about seeing him. Just, we are going to see dad tomorrow at McDonald's. It will be fun to play there won't it? (You don't know whether he will play with her or talk to her or what, so don't build up his behavior to her or create any expectations, except to let her know that she should expect to see him) Over time, she will develop her own relationship with dad, and dad will be the one who controls the nature of the relationship. You don't have any control over him and what he does or how often he comes. He will be the parent that he chooses to be. You can only control how you react in the situation. Try not to build yourself up too much either, that way you won't be disappointed.
I know what you are looking for, and I know the ways in which you imagine it might be great. You can try to give him advice, but he will probably just resent it (often what he hears is that you think he is too incompetent to figure it out himself). Just let him interact the way he wants to, and hopefully he will figure it out (unless there are some special medical issues with child that need to be conveyed, ect..). But he will have to figure it out on his own. Even if he doesn't you and she will be ok.