My non-o was approved and sent 2 days after I entered on 60day exempt. I took a couple of weeks to find housing,, then did border run to activate the non-o. Then jumped through the hoops to get bank account, vehicles and drivers licenses. Was easy. I used a border run company here in hua Hin to bounce in Myanmar.
And do note that you can't touch that 800k for 3 months after extension and it can never fall below 400k after that. 800k must be back 2 months before next extension.