Ah, that sounds like a great combination of instruments. In that case, I would definitely get something like the Doepfer A-119 or a similar mic/instrument preamp with envelope follower. Rings and Clouds would likely both be really fun with a dulcimer.
I've been using two of the TipTop Mantis cases (208 hp each) along with two Make Noise skiffs (104hp each), and I would highly recommend the Mantis in regards to value for money. They have been having trouble with low stock, but I'm sure you could find one soon.
Have fun and good luck!