Just another friendly piece of advice, because I was in a similar situation to you this time last year. I was planning on picking up a Red 1 before Al and I took that trip to Montreal. I've used the Red 1 and the Red 3 and they're both great units, however they are quite pricey compared to what you get. Very expensive casing and design, which don't improve the sound at all. If you're really feeling the 4 channel thing, There are a few 4 channel pres that are significantly less expensive, and IMHO better sounding.
The first two that come to mind, are the Daking Mic Pre IV and the API 3124. The Daking is about $1000 cheaper than the Red 1 and the API is around $400-$500 cheaper. The Daking has detented pots, which you may or may not like. Personally I do, as it makes it much easier to recall, and set up stereo setups.
Another option, if you want to spread your purchase out over is the 500 series format. You could spend around a grand now, and get one channel, and then whenever you have a few hundred bucks, adding another channel. You can also add in compressors and EQ's, so you can create your own custom channel strips. There's to many great units to even mention in that form factor.
Now if you're planning on going with the ISA 428, it's a different story. It's about half the price of the Red1, although I've never used one so I can't speak to it's quality.
Not trying to tell you what to do, just hoping to offer some friendly advice from someone who's been there, and came out the other side very happy.
Cheers