Regardless of the "letter of the law", to secure some support for the program, and to keep everyone comfortable, it would be best in this situation to stay away from copying materials. Even if there may be a fair use / fair dealing exemption, I need to err on the side of caution.
I think the LR Bible, and the LG Bible might be a good combination. Then "The Next 10" would work for RC and the tests.
Amazon has the LG Bible for about $40, and I think the same for the LR bible. Add another $20 for the Next 10, and the bill is around $100. That's pretty much what I was targeting. To secure $100 per student in sponsorship, for a class that I'm going to initially keep at 15 or so, shouldn't be terribly difficult for anyone to swallow.
Man, if that was your budget, why you worrying?
Yeah, LR, LG Bible, Next 10 for RC and supplemental tests, that's all anyone could ask for from an 18 hour course. Good luck, this should be done more often.