Janet
Regarding Sole Proprietor vs Pty(Ltd) When you are a sole proprietor, the income of your business are tax in your own name, and you have to register for provisional tax.
If you however have a Pty(Ltd)you can qualify as a SME (Small and medium size entity)the tax consequences are very good, because you only start paying tax when our business taxable income exceeds R63 556 and up to R350 000 your tax will only be 7%.
msbaccounting.co.za also render that services for you at a very reasonable rate