Hi Dgc333, the way I understand it, the rules in FL changed in 2019. I had to bring mine in for a physical inspection. It wasn't thorough, just a cursory look. The inspector was looking for the engine serial number but didn't find it and ultimately gave up. A little pink sticker has to be affixed (mine was put in the forward door jamb) and cannot be removed. So I'm pretty sure you'll have to title it in-person. My registration was done at the same time...maybe that can be done remotely.
As for the antique plates, I think you could only get those if you indicate "antique" on the application and the DMV personnel make a mistake/overlook it. But I don't see how that's possible because you have to submit documentation.
Sorry I don't have better news, but good luck.