Interior paint, is it okay to just paint the wall?

[Robert Hernandez]

All,

I have one unit that is about 1150 sqft, 2br/1.5 bath 2 stories. From my PM I should expect a quote about 2-3k. 

What have yall been quoted before? How can I reduce the cost, aside from hiring off craiglist. This is my first investment.

Is it acceptable to just paint the walls. And I can paint the Trim myself. I was planning on leaving the ceiling as is. The paint color I plant to use will be same as existing wall. No change.