i have removed all the popcorn from my ceiling. What a messy job! Anyway, I am now ready for the next step, but I am not sure what it is. I would like to make it as easy as possible. Is there a thick paint that can be easily applied? Do I need to prime first? How long should I wait for the ceiling to dry after removal of the "popcorn"? Any other fairly inexpensive, not too labor intensive suggestions?