Welcome to the forum! You may want to start with an all in one system, such as Grainfather, Anvil Foundry, Mash & Boil, Digimash, Brewers Edge, Brewzilla, etc...but if you are looking at jumping into very sturdy and somewhat expensive systems, then Spike (has an all in one and 3 vessel), SSBrewtech, Blichmann, etc... the sky is really the limit. But you can get into the arrangement with a lot less and then learn and decide. Others will give you specific thoughts on that, but some have suggested biting the bullet on a nice set up right up front and then enjoy the system for a long time, before switching up components or approaches.
Cheers!