Some suggestions:

1. Set a budget and don't go beyond it if you approach the end point.
2. Get a good full inspection to know what the parts/labor might be... Parts on these cars are REALLY, REALLY expensive and hard to get time wise.
3. Be prepared to contact many, many salvage yards for getting better deals on used parts instead since it's a salvage car already. May as well save cash and use "used" parts where possible to meet that budget.
This would be especially true with PCMs, leather seats, wiring harnesses, and other electronics.
4. Hope you have patience... also figure out what you will do with the car when it's done. If you spent $9K, and the price drops on new SRT-6's left still keeps eroding, you don't want to spend a total of $20K (9K + 11K repair cost) when new and/or lightly used non-salvage cars are $25K. Resale value will suck for this thing, regardless of who might buy it, so be prepared to use it when you are done.
5. If you are married, and have a "non-car" wife, get her a bottle of sedatives to wash down with a bottle of good vodka... I suggest Stolichnaya.