well done - sounds like it worked out for you - a very good IRR.
there's also another school of thought (again taken from gambling) that professional gamblers don't bet more than 1.5% of their pot. Of course - this assumes that if you are wrong then you lose 100% your bet, where in investing its usually much more forgiving.
CLT Price at posting:
11.0¢ Sentiment: Buy Disclosure: Held