If this is *the* watch for you, and you're sure you can afford it (kbh's words not to be taken lightly), then absolutely go for it. You don't sound too sure, so it may be wise to enjoy the WM9 a while longer until things settle down in your personal life. Anyhow a 2003, I believe, will have lug holes with SELs. These models should always be a couple to a few hundred less than the 2004+ non lug hole models. So the full package should definitely be under $4k. I'd consider $3500 a good deal but not a stunning deal. If you're patient, you can and will find one for slightly less in good shape. Expect to lose a little on resale down the road even so. But you're not ever going to lose much if you keep it in good shape. Some day, I'm sure subs from this era will drop below the $3k mark but that will take a while and you'll have enjoyed it a lot by then if you do decide to sell. Never look at it as an investment, though. It's a luxury item, and nothing more.
Let us know what you decide to do, and of course post pics if and when it arrives.