Whales Voyage and Labyrinth of Time are a couple more CD32 RPGs, sort of. You're right about needing to make a boot sequence and use WHDLoad for the games, I've done this to make single-CD versions of a few games for my CD32. It's not that hard if you can work out how to use MakeCD. Try this tutorial and see how you go -
http://acdldp.emuunlim.com/bootablecdr.shtmlYou should maybe also visit this website, which is for homebrewed CD32 versions of Amiga games -
http://www.rgcd.co.uk/cd32/