You've got a lot of responses already, but as a business owner, I highly recommend not taking risks like this when you first start out. You don't ever want technical problems like word documents not opening correctly to mean the difference between getting your work done and spending time working on... well, not work. This is why I've always advocated that Linux is great, especially for my home compute, but when it comes to work, it's about being the most effective/efficient.
Definitely tradeoffs to consider.