My XR7 sat completely dormant for 8 (eight) years before I bought it and trailered it home. The fuel smelled like stale varnish. I drained the old oil and installed a new filter, then put in some cheapo 5W-30 oil. I knew I'd be draining it out after an hour. I put in a new battery and hit the switch. It started up like I'd just driven it to the corner store. Settled in on a smooth idle with no problem. I dumped in 5 gallons if 93 octane, and let it run for a hour or so then changed the oil and filter again.
I'm betting yours will fire up just fine. I'd go directly to the gas station for a tank of new fuel, and change the oil when you get home. Six months isn't all that long, but if you do it again I'd treat the fuel with Stabil, and put it away on a full tank of gas and a fresh oil change.
JD