Okay, so I have primed the room. One gallon got me one full coat. I can still see some of the original light blue through the white primer. I am going to paint it light brown...like a "toasted cashew" color. Do I need a second coat of primer? This is the desired color. This is the current color. (Before priming) Also...you know that ever-so-slightly 'textured' look that a roller leaves? You know...it's slightly 'bubbly'.... Is there any way to avoid this? It seems unprofessional looking to me;not that I'm a pro. I just think it could look better. How do pros get a smooth finish? Is it the quality/material of the roller I am using? Thanks for your opinions!