To make 5 Bitcoins a month, you will require at least 350TH hash power running 24/7, at current difficulty level.
You do have a few choices of mining rigs to reach 350TH, just do a little research yourself you will know. If you are in doubt, come back to forum and check.
Based your knowledge level, it may not be suitable for you to operate your own farm. But if you have the budget and determination to go into mining for a profit, then you can consider using a hosting company, us for example
I would recommend you to start small, with one rig to play with maybe. Until you figure out the in's and out's, don't go all in blindly.