A few things to add to this are:

- Understanding past trends and speculation rises in Crypto prices. (Mining profitability always appears underwhelming at face value, so understanding a little of what the profitability will have actually been by taking into account prices in 3 months, 6 months, 1 year and beyond)

- Researching and keeping up to date on the latest trends and projects. Knowing which projects have large movements and mining accordingly can produce much higher profits than sticking with 1 currency.

Feel free to PM me if you need assistance with anything!