Thats unbelievable they could sell a kit shorting you on track, that would drive me crazy. I still have some painting to do before I'm ready to build. Getting there...
Blackdog a lot of guys use MM Dunkelgelb, but I prefer to spray with Tamiya acrylics. You can thin out Dark Yellow (XF60) or add another color like Lt. Grey (XF66) or some Buff (XF57) to it in small amounts. In this case I added XF66 at about 25% to my Dark Yellow (XF60) 75%. I believe theres no perfect color for all vehicles and that they vary quite a bit, so I like changing hues a little so all my vehicles aren't exactly alike. You can't go wrong with Dark Yellow (Dunkelgelb) in either acrylic or enamel.
On the Dragon kits, study the plans and get familiar with the parts. They can be complicated but if you know what you want to do ahead of time, you usually have a couple options on a particular part or subassembly. Just do it, whats the worse thing that could happen, destroy a $40 kit, who hasn't??