If the log cabin, proper, has been elevated to a second level, then floor boxes (pick your brand) solve your receptcacle runs.
Go with low voltage, wireless, controls for all lighting switches.
BTW, LEDs can be uniquely addressed if powered by Cat 5e cables. Google around on LED lumieres. They can turn corners on a dime and are inherently fire proof. These babies can even be color tuned -- from an iPad app.
You'll see video on them at Ask This Old House and DIY Network.
Cat 5 fishes a whole lot easier than MC.
The cost of the new style fixtures is largely offset by the ease of running wire in such old work.
Cheers.