Hi Bryan. I definitely remember you and your car. I still have pictures of it stashed somewhere on my computer, it was an awesome color combo.
Getting to the motor, that's a tough one as there are a lot of different ways to approach it. However, there's NO disputing how awesome the LSx is. If I had to start from scratch on a motor right now, I'd most likely do a big bore LSx. As you pointed out, it's just amazing what's being done with that package. It's lightweight, parts are just about as easy to find as parts for a SBC, and you are ahead of the game when in comes to the EFI. If you plan on having fuel injection anyways, I'd do the LSx.
My next project will have an LS7 with boost.