Hey there Assasingreed,
I'm new on here and realized this is a month old, but it doesn't look like you got a reply. So I'll do my best to help and hope you still need advice, or that it'll help someone in the future.
1. I was also worried about the VR001 kit not coming with it, but it does in fact include a set of ram / vrm heatsinks.
2. It may not be necessary to buy the extra kit due to the above, unless it doesn't have enough sinks to cover a 68xx. It comes with 8 RAM sinks and 4 VRM sinks. Also, a quick google search uncovered this, which shouldgive you some confidence in your choices.
http://www.overclock.net/t/850451/6800-series-aftermark...
3. The heatsinks attach fine as long as you follow their directions!! You MUST rub the components with an eraser first, if I remember correctly it removes an unnoticeable film that impedes the adhesive. Wash with alcohol and give it a blast from the ol' compressed air and you're ready to stick them on. Keeping pressure on them for 30sec is recommended.
4. Concerning their technical specs, well, it can handle cards up to 120W passively, past that it requires the aid of a fan as indicated by the * on their compatibility list.
5. You may be interested in SPCR they have a lot of info on quiet computing. Best resource on the web as far as that is concerned. By their standards the Twin Turbo isn't as quiet as it should be. They'd say stick a 120mm 800rpm Scythe fan on there (zip tied). For a PWM option you could go with a arctic cooling F12- it is possible to use a 4 pin fan with a graphics card for PWM control using either MSI Afterburner or SpeedFan, the process could or could not be so simple depending on how they wired it. 3 pin will have to be voltage controlled, which is more hit and miss concerning software control. Undervolting would probably be a simpler option. Fanmate 2 or something like that.
Sorry for the (probably) useless wall of text, I hope it's helpful to someone.