I have no objection. Just try not to make your character OP, because I know it's tempting because you know everything that's going to happen, but try to keep it so your character only knows what he knows and not what YOU know.
Also, if you want, I'd be glad to volunteer as a map maker. Just PM me a description of the scenario beforehand and I could draw up the map for it, or even build it in Blockland, unless you think you can do that yourself.