@Tore ********
Well, if you will be allowed a second visa-exempt entry, after you maxxed out your last one with a 30-days extension, is totally up to the decision of the Immigration officer at the border
If – only if! - you get pulled aside, he will ask you some questions, like what you are doing in Thailand
For this, you should be prepared to show the famous three proofs:
*** a ticket out of Thailand within the next 60 days
*** a booked accommodation for the next few nights
*** cash worth 20,000 THB in Thai Baht or equivalent in another main currency