HI Tim,
First order of business. I two emails to you returned, your box is full again. Should I resend them or? I think they are music or?
Now for the advice. Find out what their favorite song is that they fell in love to and use that as your theme. Second considering their age they probably love songs from the 40/s maybe the 50/s
Third about getting paid by congregants. DON'T!
It will come back to haunt you. Been there and done that!
When and if this comes up I ask the folks involved to make a contribution to a popular need in the church. There are always many and then if the contribution will cover the cost of the item put a plaque on it with their and your name on it.
That is my thoughts
Best to you and yours
Bebop