There are no strict rules so it is really up to you. I always stress variety, but some people find one recipe they love and stick to it. It is fine to have the coconut oil and wheatgrass powder every day (although I'd only use it once a day each). For maca, this works best when it is not used continuously. Since it is an adaptogen, you will find that over time it is not as effective. To keep feeling the benefits (increased energy, hormone balance, etc.) then I'd suggest maybe 4 days on, three days off or use it for a couple weeks, then take a week off...
Here is a previous forum we have asking about maca: http://www.nutriliving.com/forums/topics/maca-powder