I am about to suggest something that is going to sound odd, given another of my recent threads, but... That and given that I am probably about to start another console war thread.... You might want to visit this thread
You might also look into used Strand 300s. They fall in a similar price range, but if you really think that you are going to invest in LED fixtures, MLs, and scrollers, you will be much happier with the Strands ML package.
Spot on, soundlight! The definitive post. Answers exactly what the OP asked, and even within budget. If only you'd used that "chain link," it would have been A+, so I had to knock you down to an A. Can't wait to see your newest light show. And if you ask me, running movers on an Obsession isn't that much easier than on an Express. As I've said before, there could be a place at a Pirate Show or other attraction in your future. Learn Show Control, as it is the future of our industry, along with the other buzzword: convergence.
That makes me suspicious, if only for the fact that an Anvil case of that size in decent condition could go for 4-600 dollars.