1) I'd expect my attorney to react like my doctor would if I brought him a kidney in an icebox and asked him for a transplant. The kidney might be good, but how does he know?
2) If you're giving away a usable product, don't plan to sell much of it -- even if the full version is better in some significant way. If the freebie is good enough, why buy?
Overall, I think you're going to find that you have tough competitors -- huge document libraries, low prices, and solid marketing. Have you surveyed the competitive landscape?