How far along are you in the construction of the Cornet? You could install the resistors and do the CCS upgrade later if you wanted. When I bought the kit, I purchased the 30k 5W resistors along with the components for the current source (also from Mauser) so I could just plug in the resistor if installing the current source seemed too difficult. Installing the hum fix will give you a taste of what the CCS will entail. I'm also new to DIY and it was a bit tricky for me to do all of that soldering above the board. I studied the CCS schematic and the pictures on this web site for a couple of days and played with the layout of the components. I eventually decided to try the CCS, but I had the resistors as a back-up. And I've gotten pretty good at de-soldering.
In the meantime, here's the parts list I ordered from Mauser except I used a different heatsink. I think this is the heatsink others are using. I also used thermal paste with the heatsink, which I think you can find at Radioshack.
Qty
2 - 511-MJE340 NPN FASTSW PW ST Power Bipolar Transistors (print out spec sheet on Mauser catalog for future reference)
4 - 281-1.0K Xicon 1W 5% Small Metal Oxide Resistors
2 - 140-XRL16V100 16V 100uF 20% Xicon Radial Electrolytic Capacitors
2 - 532-577500B00 BLACK ANODIZE TO-126 Heatsink
