Good cost effective paint

Hubby is gone for 5 months and I only work part time. I need a very cost effective paint (like super cheap but good) to do the Master bedroom, the upstairs hallway and loft area, the bathroom, living room, kitchen/dining room and guest rooms. I plan only doing accent walls. Not sure on the colors though. The kitchen is going to be a cranberry red, my curtains in the living room are olive green, beige, brown and off white stripes and the couches and chairs are all brown, beige and tan, my bedroom is all dark brown... Any suggestions on either question? What brand and what colors! I DO know that the one guest room is getting painted bright green and pink flowers to match the quilt I have in there (gonna be my step-daughters room). Everything in the house is either brown or an olive green. Help :)