Emaxx 3905 budget setups?

Hey guys. I've come to the realization that I want an Emaxx. I've always yearned for a big freakin' 4wd monster truck, and now that I got a job this summer, I'll have some decent cash flow to fuel this money pit of a hobby (can't spend it all of course....3/4 of what I make is for school/gas money/groceries in the Fall and Spring terms).

Anyways, I was looking at the brand new 3905 Emaxx, and since it's advertised as "brushless ready" for a decent price of 360ish bucks, I figure that's a good platform to start off with for larger scale brushless.

So I have a few questions for those of you who have brushless maxxes (specifically the 3905).

What would be a good motor to run? I'm leaning towards the Monster Max as the ESC, so no issues there (I like their products, and from my experience with the MM, they have fine ESCs). I have an HV4400 motor I could use if the motor is going to end up putting me above my rough budget limit too (I can always buy the 45 dollar 5mm shaft upgrade). I would prefer a motor that would be a good 5s candidate, as that's what I'd rather run than 4s.

Also, should I run 4s or 5s? I was looking at the Zippy packs from Hobby City, and they look like a slammin' deal if they can deliver their rated performance, but I'd like some feedback on those as well. I was eyeing the 4s1p 5000mah 20C packs since they're about 85 bucks a pop (not bad, but if they just can't handle a monster truck, I'd appreciate someone pointing me in a different direction). I think there are also some 5s1p packs that have a good C rating, around 4500mah capacity, and still come out to about 100 bucks a pack. As I stated in the previous paragraph, I'd like to run 5s, but if 4s works out cheaper and will move the truck around with decent power, runtime, and the motor will stay relatively cool, then I'm willing to go 4s too.

I also found a charger on there that is identical to the Venom Pro Charger that is going to come out, for about half the price (about 60-70 bucks for an AC/DC unit, which this charger is EXACTLY what I'm looking for), so that is the charger I am leaning towards (does 1-6s at .1-5 amps and balances, so yipee!). I'm in need of a new charger anyways, so I'm probably going to end up getting this charger regardles of whether or not I do this little project.

So, any advice oh mighty gurus of RC-Monster?

I'm trying to keep this as low cost as possible too, so any "cheapy" solutions for things such as the motor would be nice. This is, of course, not to say that I won't upgrade later on. I like my 50mm medusa, and if I can afford another one in the 60mm flavor, then that is a viable motor option down the road. But to start, I won't complain about using a cheapy KDA 30 dollar motor from hobby city (I know it'll run somewhat warm, but I can tolerate it for a little while until I move on to a better motor). I just need something to get rolling for now.

Keep in mind that I may have to do this in stages as well, and most likely won't start until about a month from now, or possibly two! If I find that the cost is climbing a little too high (above 700 or so as my uppermost limit), I may have to abandon this idea altogether. I am open to any other large scale vehicles to go brushless with though! Maybe an 1/8 conversion is in order if it comes out cheaper...

Thanks in advance guys!

-Joe