Here's a thought...maybe spending 16-20 hours a day in a crate is making him lethargic?
You said you've read 'several' books and done 'more research' than almost anyone prior to getting your puppy. Several of us have asked for the names of these books out of interest because obviously none of us agree with the advice you've been given. Can you give us a couple more titles?
I have recently read 'The Mentally Sound Dog', which was written, I believe about 8 years ago, that stated a puppy being crated for 8 hour stretches would be necessary at times but it would be better if someone you knew could let the puppy out for a break every 4 hours or so. In Kflanga's defense it did state that 16 hours in a crate would not be unusual. I, personally, find this ridiculous.
Kflanga...let me apologize, for myself only, for seeming harsh (although you're not seeming to take it to heart). In no way can I understand why on earth you would be home and choose to crate your puppy as a potty training method. Crates are used for potty training, etc. when you do not have the ability to be home and use some other method, of which there are several. I'm sorry that this is the information you have been given by a medical professional.
There are several methods you could have chosen and used the crate as a back-up or a supplemental tool. It is my firm belief that you are going to have a socially inept puppy that has not bonded to your family as it should have. At his age he should be out and about with you as often as possible, meeting other dogs/animals and people, not stuck in a crate.
But, as you are not willing to change your methods, good luck. I hope this works out exactly as you've been told it would.
Kflanga, to answer your question, I don't think that you understand. You're dog is on YOUR schedule. A dog does not 'get up' when you decide it's time for him to get up...ie. 0700. If you get up at 0500 you can expect your dog to get up to. And once he's up he needs to go to the restroom. Crating him isn't taking away his urge to pee. What you're doing is forcing him to hold it so he doesn't soil his cage.
A month from now and you'll think yourself lucky? My dogs have all been housebroken in as little as 2 weeks. That was 2 weeks of being home, catching their signals and taking them outside. They were also on a schedule...they were taken out 1/2 hour after they ate, drank, played and immediately after they woke up.