Also...Roosters are programmed to climb to the top and be leader. Its just the way they are designed, unlike hens that are more gentle and affectionate. Roosters see you as one of the flock and don't see the problem with keeping you in your place beneath them. You never want to turn your back on...
Yes you definitely need to start early and establish your ranking. Treating him as you are may open the door from him to at some point challenge you. So you need to set boundaries now. Offer him treats after the others get theirs, don't let him on your lap, walk right past him like you are...