1) yes, submit TDAC online up to 3 days prior to your arrival in Thailand.

2) yes, get TM30 receipt from property

3) the 90-day report form is called TM47 but it must be done in person at the immigration office the first time. The window of time that this must be done is up to 2 weeks prior to your 90th day continuously in Thailand or up to a 1 week after the 90th day.