In the past 5 years of living in the caribbean I have become happier with less stuff. Now everything we own fits into our small bedroom in our staff accommodation. And we are considering downsizing again to move back to the states with ourselves and our dog and very little else.
So my advice to new pilates teachers is to build your clientele, avoid large expenditures, and save your money. Only buy things you really need or things that will help build your business and earning potential.