The bad news is, you still have a lot to learn, before you can design a good layout. I think that this is even worse than the standard layout (quite an achievement actually), in too many ways to list. Randomly rearranging keys and changing keycap sizes and row staggering to fit more keys, is not going to work.
The good news is, if you are serious about learning, there's a ton of great resources out there, so never let smart alecks, like myself, discourage you.
I'd start at Deskthority's
wiki and go from there.