I think bad gas is the biggest issue you're up against. My Jeep regularly goes for almost a year or more without being started and ran. When the gas is good, it fires right up, runs a little ragged for a few minutes, then everything smooths out and we're all good. If the gas has soured, the plugs tend to foul fairly quickly. The crap gas they make these days is not nearly is robust as the fuels from when our cars were new. The additives and Ethanol crap they add breaks down much quicker and turns into something that's still flammable, but good enough to run the cars very well.
I would do whatever's necessary to ensure the carb's primed with some good gas, and give the key a turn. Take the butt of a heavy screwdriver and tap the top of the fuel bowl(s) a few times as well... just in case the floats are stuck. Be prepared to clean/replace distributor cap & rotor, points (if you still have 'em), and/or plugs as well. I stored my '82 Mustang for 15 months back in the early '90s and came home to a car that ran like crap... which a new cap & rotor, plugs, wires, and some premium eventually cured.
I wouldn't worry too much about condensation inside the oiling system unless you're in a high humidity area (as in, you regularly notice condensation build-up on the car after temp changes (i.e. mornings, etc.) - if it's parked inside a garage (as it appears to be) the chances of condensation building up to significant levels is slim. I'd consider changing the oil soon after getting it running again, just to get new stuff in there.
Totally agree on Don's advice about checking all of the car's sub-systems for functionality before taking it out for a cruise, though. Rubber & plastics dry out over time and could easily prevent something like a power brake booster from functioning properly (not something you want to find out as someone cuts you off in traffic).
Good luck!