Send me the ficm, I can repair it if it's indeed bad. Don't worry about paying me right away either. If the ficm is bad I will know because test voltage will be below 40v when powered. The step up board is only 130 bucks and I can get the firmware updated by international (I still have all the software for a long time ago). The control board is almost never a failure point. I'd be willing to bet you blew the step up board when you tried to get it going. (not your fault, but now you know its frowned upon to mess with the batteries, use jump boxes and jumper cables). If the fuel pump is bad (Impossible to know until you replace the ficm) it's actually a cheap part.
In the meantime you can get the oil cooler replaced, like I said, its cheaper than you think and easy to replace.
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