White is a difficult colour to achieve a deep shine on (as is silver), but a wax won't do it anyway - the gloss levels on a car's paint is 95% down to the preparation work anyway (as a few others have hinted at already).

People expect far too much from a wax, and I'm talking about a pure canauba wax here like the AG HD, not 'cleaner waxes' or 'All in one' products like megs tech wax. A [product like HD is to purely to protect the finish you've achieved with the claying and polishing stages. It won't, in itself, provide any 'shine' as such. Think of it like varnishing an old rough table:- if you sand down the table so it's perfectly smooth, then apply a varnish (even a cheap one), you'll get a great finish, but if you don't smooth it down and prepare it properly, then you can apply as much varnish as you want, it won't ever shine properly. Same sort of thing with car waxes, the best deep wet look glosses are all down to what went on the paint before the wax .

Also, each to their own, but 7 layers of wax is overkill imo. and you will run into the law of dimishing returns after about 3 and are wasting time and product unnecessarily. Also, a pure canauba wax needs time to 'gas off' after application when it releases the solvents, so when multiple layers of wax are to be added, you need to leave approx a few hours between applications. This varies from product to product and some synthetic sealants can be layered almost straight away, but for a product like HD wax, personally I'd be allowing about a couple of hours between each layer. Loads of info on this kind of thing over on Detailing World