When you buy the kit, you get the chip, the PCB, and all the resistors, inductors, capacitors and some of the connectors... They couldn't make it any easier really... They also give you some nice pdfs with step by step instructions.
The amp10 will be a little more difficult than the amp6 as it needs a transformerwith +-22v to +-35v, so you really need to know what you are doing here as it involves mains voltages... It should work well tho, just read up about transformers and how to wire them up. If you feel this is a but daunting, I'd build an amp6 first, power it from batteries or a 12v brick, then if you get on well with that then go for the amp 10.
If you feel brave, go straight for the amp10, and order a toroid also as well as:
You need to add / not included in the kit
* Transformer with mains fuse and power switch
* Enclosure with connectors for speakers and line input if required
* Heat sink. For many applications, screwing the components to a metal enclosure is sufficient as a heat sink. However, for high power applications like bridged mono 8 ohms or high power 4 ohms, a heat sink is recommended.
* Mounting screws
* Volume control or pot if required