Tiger Lily

Article idea: I want to buy a basic home gym since my nearest gym is 80 kms away. I want to strength train and go for the whole three-four excersizes that train the whole body along with my own very specific workout (I dance ballet at a reasonably high level). I can spend quite a bit, but I would appricate knowing what is a complete waste of money because I can easily create my own. Which weights and equiment is a must?