Hi there, I'm looking for Non-O visa advice

My partner is Dutch and has a Non-B and work permit here

I am American and am currently here on a Tourist Visa (with extension I have until October 5th)

Step 1. Get married and registered with a local Amphur

Step 2. Non-O visa for me

A lawyer has said I can convert from Tourist to Non-O for 30k baht, however I think the timeline will be very tight for an in-country conversion, and it is much cheaper to apply on the thaievisa website

Question 1: Can I begin the Non-O application online after we are married but before I leave the country for a couple weeks and then re-enter? The thaievisa website doesn't really know where I'm applying from so it would be nice to get a head start on the waiting period

Question 2: After the Non-O application is submitted, what is the rough turnaround time for the visa to be issued? Just looking for other people's recent experience with the process

After I enter on the 90 day Non-O, I understand it can be extended annually. I was under the impression that it would automatically synchronize with my partner's Non-B.

Question 3: Is that correct? Or will I be on a staggered annual visa compared to his annual visa?

Thank you in advance 🙏