Do you know the officer's contact info? Try contacting him and ask him. But do so before the 30 days to dispute happens.
Just tell him your situation and he may be nice to change the ticket to ticket you as the 'registered owner' which will carry no points. This charge has no points because it is stating that they know the vehicle was speeding but cannot be certain who the driver was so it's charged to registered owner without points.
That's how red light tickets and photo radar (when we had it).
If you can't contact him prior to the 30 days, then dispute it and talk to him at the courthouse and tell him that you plan to plead guilty and are hoping he can change the charge to the RO instead so there won't be points. You may even be lucky enough that he doesn't show up and you just plead not guilty and it gets thrown out completely.
I find that most of the times, if you show you are making an effort, the officers are quite accommodating. Things usually are not as stressful for them when they aren't standing at roadside and are generally really nice if you are able to talk to them while not at the roadside getting a ticket.