I actually think being marked by Rak'keli makes an interesting internal conflict for a Myrian.
Anyway, for the conversion, you can check how I do it in my CS. For ease of computation, I suggest doing purchases in Miza before converting the final amount to Bikka. It doesn't have to be an accurate number for the Bikka but at least you would know exactly how much you have in terms of Mizas.
I wouldn't mind threading either, but I have been slow to post of late. You might get bored from waiting writing with me!