Live within your means or spend money you don't have on a gamble that could pay off big. I've done both and my personal experience has been that I have always done much better slow and steady, living within my means. Despite how much I hate admitting it.
There is allot of truth to the expression "necessity is the mother of invention". Sticking to what you can afford and letting necessity drive your creativity rather than creating by throwing cash you don't have at something seems to always work better for me - and if it doesn't work, it is so much easier to recover from.