The list goes on and on. The machine you're quoting should be able to handle everything you come across in your first couple of years.
You will be learning during that period, not just about cleaning, but marketing and general business management, so you would be wise to remain within your budget - others may disagree - focus on your plan and whatever professional advice you've been given.
You need some time, to discover whether, or not, this is really for you and by staying in control of your " purse " you will not get yourself into difficulties, if you don't get, the return, or enjoyment you expect.
Most start small and learn, others gamble and pray !
rob m