For the most questions you can say: "Yes, its possible"
Only the multiplayer-playing is not avaible. It will cost so many Scripts, that the game will be unplayable!
But in my posts i've also answered, if the people here use the RPG-Maker2000(2003), because the XP have to many mistakes in his program.
But did you have seen, that this is a german forum? *lol*
Not many will answer you in english!

(Ich hoffe ich hab nix falsch geschrieben^^")