I'm assuming when you say you don't need anything for the room, you mean it's already treated? Because if it's not treated and you're saying that... I'm a tad bit worried. xD
But shoot, this encompasses a lot of what you may need. Assuming your room is treated really well, then I'd suggest buying decent mics and preamps over plug-ins. But then it begs the question, are you planning on recording rock bands live, or one at a time? In other words, do you plan on recording drums by themselves, then bass, then guitars, then vocals? Or do you plan on doing all at once?
Of course, if your room ISN'T treated well, and you refuse to treat it, then you may be needing to invest in some decent plug-ins to compensate for whatever issues come up from your room being treated poorly. I may note that the plug-ins will cost more than room treatment, so I really suggest treating the room if it isn't.
You also said you wanted to use
Superior Drummer. Personally, I'd suggest recording live drums, but I suppose that's up to you. In my suggested gear list, I'll include gear to use for drums, but I'll put asterisks next to them with a suggested replacement if you REALLY don't want to use live drums.
I'd also have to know if you have a firewire capable motherboard, or if you can only run USB. Personally, I'd suggest running firewire if you can. You can buy a firewire PCI/PCIe card on newegg for $50 or cheaper.
Mics/DI boxes:
SansAmp Programmable Bass driver - $210
Radial JDI - $200
Radial Pro D2- $150
Radial Reamp JCR - $200
*Audix D6 - $200
Neumann TLM 103 - $1100
Shure SM7b - $350
**Four (4) Sennheiser MD 421 II - $1520
***Electro Voice RE20 - $450
****Three (3) Shure SM57 - $300
*****AKG Perception 220 - $180
Two (2) Miktek C5 - $1200
Audio interfaces (Firewire):
Focusrite Saffire Pro 56 - $1000
Focusrite Saffire Pro 40 - $500
Monitors:
Two (2) Dynaudio BM 6A MKII - $1500
Total cost: $9060
* (Audix D6), used primarily for kick drum in my example.
** (Sennheiser MD 421 II) I'd still suggest getting two of these for guitar, so you'd knock off $760 from your total if you didn't want to do live drums
*** (EV RE20) In my example, it'd probably be used for a low tom. It can also be used for kick amongst other things.
**** (Shure SM57) I suggested three so you'd have two for guitars and one for snare top, but if you didn't want it, it'd save you $100. The SM57 is a pretty good mic for $100 though, so I'd suggest keeping one just in case.
***** (AKG Perception 220) This was suggested as a snare bottom mic. You could also use it for vocals or acoustic guitars or something, but the TLM 103 would be better for most vocals and the Mikteks would be better for acoustic guitars.
****** If you didn't buy any of the drums suggested for drums, it'd save you about $1700. You could use that on a more decent mic pre, like the 4-710d from Universal Audio or the Vintech 273.
Well, there's a lot for you, and I'm sure someone will come along and disagree with me, but there's my suggestion for you if you're looking to drop about $10,000 on studio equipment. Cheers.
EDIT: Forgot to tell you, a lot of these mics you could probably find on craigslist or ebay if you were looking to save a bit more to afford some nicer preamps.