Hmmm I think I have just jumped in and sunk the deep end!
This may sound stupid guess, but, I'd guess every piece of gear that you are bending needs to have a different sort of set up and each one can be based on the idea of another.
Nah, that's not stupid at all! Each device is a little bit different (except for the ones that are the same circuit inside a different case), but with each one you do you learn a little bit more that you can then apply to the next one. Also if one's a little too complex at one point, you can put it down for a while, do something easier, and come come back to it a few months later with more experience. Just be careful you don't build up a massive pile of open and unfinished keyboards
If this is your first bend, might be worth waiting till you've completed a couple of devices before adding an LFO, but it's up to you.
Looking at that schematic you linked, I am getting what is going on and the pieces that are needed, I am just not understanding how both pictures correspond and, well even where to start. Is there only one power source?
Thanks for the link by the way. It has opened me up to more ideas just looking at it.
Ignore the Speak and Spell on the right for the moment. The pictures on the left are the important ones. They both represent the same thing, but the lower one will probably be easier to follow. Write down the components you need from the schematic, and get a breadboard to plug them into as well. The A and B are the power points, and the C is the point you connect to the pitch resistor... think that should be everything you need to know!