I only skimmed the OP, but what I saw makes sense. Obviously the OPer put some time into his composition.
My only suggestion would be to abandon the card-reading idea. I can't imagine too many cops letting that be read uninterrupted. Plus, in states like Washington where OC has gotten a lot of official attention, they know the deal. While there may always be a cop who didn't get the word or slept through the briefing, the rest know the deal on OC and reasonable articulable suspicion (RAS). Plus, you just give them a reason to demand your ID while you have your wallet out. And, I don't know that its a great idea to be reaching for things behind your back in front of an adversarial cop which he surely is if he's investigating you; and remember, you've got at least one weapon in view.
We've gone a long way on a simple logic flow chart. My suggestion would be to follow more along that line:
"Officer, no offense, I know you're just doing your job but I do not consent to an encounter with you."
"Am I being detained?"
"Am I free to go?"
"I wouldn't care to answer any questions without an attorney."
"I wouldn't consent to any searches or seizures."
The simplest thing is to do like the fella in the one video who literally says not one word to the cop while videoing the encounter. Leaves the cop standing there asking questions until the cop finally gives up.
The next level up could be said to be what I mentioned above. Simply exercising one's rights. Keep in mind that by doing that you are also protecting your legal position should it be a bad cop and the situation deteriorates. As mentioned in the video Busted: A Citizen's Guide to Surviving A Police Encounter, if the cop does something wrong, your attorney can ask to have that bit of evidence disallowed.
A step up from that level is to ask questions to get the cop to give you ammunition for a lawsuit or formal written complaint. "Why am I being detained?" "Because you're carrying a gun." To self: "Thank you for admitting this is an illegal detention, copper." Outwardly, "Oh, my. Did a caller allege something illegal?" "No one called, I saw you when I was driving past." To self: "Thank you for reinforcing the illegal aspect of the detention, officer." Lots of seemingly curious questions you can ask to get the cop to admit on your voice-recorder the holes in his legal position. It may turn out later that he had more RAS than he told you and his legal position was solid, but then again it may not. If experience is any guide, its more likely that a detaining cop does not have a solid legal position, so it helps, in my mind, to gently probe for ammo. If you're up to it.
A big point in all this is to remain calm, almost friendly. This makes you look good on any recordings. The smoother and polished you sound on the recording, the more you highlight how much of a jerk the cop is being.