Can i run a 40 acre apple orchard for buisness as well as grow wheat all on the same land?

i've always wanted to run my own apple orchard for buisness. i've heard about 40 acres should run a decent local buisness where i can sell cider and have pick-your-own apples and have tours and what not.. but i have recently wanted to grow wheat on my land but i don't want to stop my orchard buisness... so what would be a good acreage amount to grow wheat if i don't want to be too busy running an orchard and grow wheat?? i was thinking about 20 acres? is that too small to make decent money from wheat??