Looks great!

You should also consider adding some plasti dip to the prop rod. Games after Funhouse had the same coating used on the lockdown lever and the prop rod.

I've used Tony's guide for speaker replacement and it's nothing short of awesome. Even a $20 speaker will sound much better than the originals - since the originals were *cheap* and are already worn out.

Also, under the amp built into WPC-89 sound boards, all speakers share about 25 watts. Not like you're going to have enough horsepower to make inexpensive aftermarket speakers distort etc.