Yes, that's right about Kopaka aka Master of Ice. I would assume the other one is Lewa aka Master of Jungle. You're basically spot-on with your descriptions of the pieces, so I'm pretty sure you know what you're doing in regards to the differences in pieces and how they go together. I don't think you would have issues with the actual physical building of the sets, since you can tell the pieces apart by touch alone. Lego pieces are meant to be put in any combination you want, but I'm assuming you want to put them together as intended. In that case, you probably should get someone to help you, as Imrukii said. That way they could help you organize your pieces (which makes finding parts when needed a lot easier) and tell you how they go together.