Please don't take this the wrong way, but... I suggest you do a lot more learning and practising before you try doing this as a business. I don't see anything in your wedding photos which convinces me you have the skill to take photos people will be happy to have paid for.
Other than that, you're buying almost entirely the wrong gear for portrait photography. Photography is much less about the gear than a lot of the Internet would have you believe, but there are some basics. You need a fast lens (for shallow depth of field) and some lighting kit, but you're buying the standard, relatively slow kit lens, Canon's worst lens (the 75-300), and apparently no lighting kit at all. That doesn't fill me with confidence that you've done the right amount of research before spending your money.