Yepp... just a little update in case anybody is curious:
You were right..
Allthough it saddens my that this system is so strange. I really had to wait until the first transaction confirmed (which took approx. 3 days) until the following transactions were able to process. Literaly making most of my money unavailable for 3 days because there was no way to either speed them up or cancel them. Of course it was me beeing "greedy" and trying to spend 5$ / transaction instead of 15$ for the first one.. but still..
Kind of akward and unconfortable. I knew the money is not gonna be "gone" or "disapeared" and was not particulary worried about it that much but i can very well imagine the panic for an "average" user who suddenly (because he doesnt know better) ends up with his whole balance unspendable for multiple days... i think there is a lot of improvement in this area