Can I get a 60-day tourist visa after extending my stay in Thailand?

AND I will go right back to my original answer and tell you no one is gonna tell you with ANY degree of certainty if you will or won't get a tourist visa.

If you're worried about it, go get the tourist visa now when this stamp runs out and then extend that tourist visa by 30 days.

It's a call you have to make, there's not any rule that says if you got an extension on a previous entry you can't get a tourist visa. It's the total time you've spent IN thailand that some consulates look like.

Christ, okay after RE-READING that post it seems you're concerned that IF you get a 30 day extension now you might not get a tourist visa issued at a thai consulate.

Nobody knows for sure. How often do you come to Thailand each year?