Thanks for your suggestions!
Dan: Yeah, of course, I should look into Trungpa's Spiritual Materialism. Have read excerpts but not the book. Can you further recall any other pithy sayings, by Linji or others (sigh, I wish my Chinese wasn't so pathetic so that I could read the writings of Ch'an), that express the same sentiment about relinquishing expectation about practice or preconceived notions about Awakening?
Tilt and santa100: SN1.1 is very helpful indeed. In fact, that particular stanza quoted by Tilt would be very suitable for what I'm working on, as it will be read by readers who are may not be familiar with Buddism. So succinct poetic verses, illustrative writings, or conversational expressions (like Ajahn Chah's advice) rather than detailed, jargonistic explanations may be more effective in putting the point across.
Bodom: That passage is wonderful, I'm pretty sure I've come across it. Is it in one of the collected books of Ajahn Chah's talks?
Thanks again. Please continue to post if anything else comes to mind--it's nice to collect these advice in a thread for everyone to consider anyway!