Switching NLEs can be a bit of a pain. I’d say you should only do it if you have a good reason. So far I haven’t seen one in your post.
Is there anything about Final Cut Pro you don’t like? If so, that could help us give you advice on what to switch to. If, on the other hand, you’re happy with it, why switch?
And what’s your price range for a computer? I find it difficult to believe you’re finding a PC that’s very much cheaper than a Mac. Maybe slightly, but it shouldn’t be enough to matter when it comes to a business decision. If you’re buying a home computer $100 here or there can make a difference, but when it comes to work such amounts shouldn’t deter you from getting what you’re happy working with.