Red Front Macaw Question

[wwills]

Hi,
I have a 2 1/2 year old Red Front Macaw "Ande". This is my first Macaw, I also have an Eclectus and Indian Ringneck. The personality of the RF is like none other and I adore him but I'm struggling with his constant need to play (pinching and biting). He does not bite that hard (usually) but just enough to get me to react so he can beat me to the punch with saying "Ouch, stop it". I realize it's a game and he loves it so I'm trying to teach him to understand how to bite and pinch more gently by teaching him the word "nice". I really think he understands what I want from him when I use this word and will be more gentle (if he feels like it). I often wonder if it was a mistake to ever start playing and wrestling with him this way because I think he frequently considers me his playmate. He is also unbelievably affectionate and relaxed with me when he's calm so I figure all is well. He was hatched from an egg in an incubator which I believe is the reason he is so insecure. He will not leave my side unless I take him back to his cage at which point he usually struggles and won't get off of my hand unless I force him to. I have been allowing him to fly for a month or so now to try and build up some confidence. So far so good, but now it's time to clip him because he will not give me a moments peace if I'm in the room with him. They all hang out together in the living room "Ande" my Eclectus "Raji" and my ringneck "Pappy". They are out of their cages all of the time unless I leave the house. I buy new toys for them constantly and spend as much time with them as possible. I'm very aware of the fact that no matter what I do they will never be completely comfortable living in captivity so I'm compelled to try and entertain them as much as I can. At some point soon I hope to build a nice outdoor aviary so the sun, smells, sounds, etc. will hopefully create an environment more in keeping with a bird's natural habitat then cages in a living room. Of course they would only be outside for a portion of the day (when the weather is appropriate).

I'm just wondering if my playing/wrestling with him and the fact that he sometimes reacts to me like a playmate is a negative in trying to maintain the flock leader position and is there a potential disadvantage to this type of bird-human relationship in the long run?

Thanks for your time!