Yea with those 3 grains you should be able to control a kit of rollers. If the birds are flying to high then a little extra milo should do the trick. Birds not kitting up the wheat. Some of the better flyers fed 95% wheat and when the roll started getting sloppy they would hit them with peas. Feeding rollers is different depending on your birds and how they are flying. The only times I ever used safflower was when they were molting or I didn't have any popcorn in the cold winter months. They were fed 1 tablespoon per bird. Watching the birds would tell you what they needed. I don't think there is anything better than watching a kit of rollers do their thing.