Yo Scrooge! Welcome to the board! So far what I can say is- insufficient data, dude. What kind of studio you build has to do with several major considerations:
1. What kind of room or rooms do you have to work in?
2. What kind of music do you play?
3. What equipment do you already own?
4. What do you intend to do with the recordings?
5. How many people/instruments do you want to record, and do you need to record them simultaneously?
6. What kind of money can you throw at it, and over what period of time?
7. Do you need to be able to move this rig for remote location recording?
There are many people trying to build a home studio on a budget that wouldn't even cover the cables of a major studio. Any answer somebody gives you without the answers to the above questions will only be so useful.
I can tell you right now where to hire the architects and engineers to design a really nice studio for say, $500,000, but that information may not be useful to you. I can also tell you how to set up a basic recording rig for about $600, but if you are looking for professional results, that information may not be useful to you either. So tell us what you have, including mics, cables, amps, instruments, computers, everything. Then tell us what you want to record, and what you want to do with the recordings. There's a big difference between simple recording for your own enjoyment, a promotional demo, and a commercial release.
There are also a lot of things you probably haven't even thought of- power conditioners, shock mounts, room conditioning, headphone distribution, reference monitors. You've been warned- this can be one wicked expensive hobby.-Richie