Very similar to how I did mine, except I did not replace the fittings on the overflow from the tank. the line just runs straight up out of the factory tank. No problems filling or emptying since there is a good vacuum created. Didn't do the front sac though, just have some lead up there.
How is the wake with that much in the bow? I've only got 360# extra in the bow and my wake has a very nice lip at the top, would think that more in the bow would cause it to mellow out some.
2006 X-2, MCX, Slate Grey w/ Pro Tour Red accents