What do you need? A good starting point would be:
- 3 or 4 guitars
- a bass
- 2 or 3 keyboards
- Control Surface
- Seventy-eleven VST FX & VIs
- SONAR
- Komplete Ultimate
- Everything from IKM
- 3 amps
- 6 amp sims
- Mixer
- a handful of mics
- BiaB
- Some other DAW
- A Super-duper PC
- Several terabytes of SSD/HD space
- Off-site backup storage and tested backup process
- Lifetime Groove 3 sub
- Good studio monitors
- Good headphones
- SonarWorks
- ARC System 2
- A professionally treated room
- 400A electric service
- Automatic backup power generator
- Power conditioner
Once you have all of this and have it configured, you'll be broke and divorced; qualified to write and perform The Blues and/or Country/Western.
I'm not there yet, but the Deals forum is my guide