This may sound like I'm breaking my rule of "If you can't say something nice, don't say anything at all", but, truly I believe that you'll find that burning coal in this pellet stove will be an expensive experiment, hence, if I save you the cost of replacement parts (or stove), and if I save you evacuating the house because of CO, then I am in actuality saying something nice.
I like what Freddy has to say. But I also "love" experiments. (Especially when it's not my equipment).
I say, "go for it". Keep a close eye on it at all times. Somebody will be able to say..."I told you so".
Maybe it will be you.