MY B&G is on the top of everything. But he always steps up for me without aggression so I don't see it as a problem. Being up high isn't a problem in itself, its just sometimes birds do up high as a point of dominance. So the problem is the feeling of dominance, not necessarily just being up high.
I absolutely think the best thing you can do to bond is do some training! Purchase a clicker (or just say GOOD BOY every single time, either works, just has to be the SAME thing) and a use a chop stick and do target training. Then you can move on to waving, high fives, fist bumps, wing lifts, recall (if he is flighted). Your birdy gets treats, spends time with you in a positive manner, very good way to bond and to train out any unwanted behavioral issues.
Another way that training is better than just spending time, is that hugging, kissing, scritching could lead to a mate type of bond a lot easier than training. Mate bonds are mostly bad because then your bird may become a one person bird and show aggression to all others, or completely flip out when you aren't around or actively loving them. It is important to foster independence in your bird, as well as creating a friend. Aggression in a bird the size of a GW can be very dangerous.
Google "clicker training" or "target training" with "parrot" and you will get a lot of sites with suggestions. I would recommend theparrotforum.com too, the admin on there has videos and a training blog. Very good stuff.
Mike