Hi Terry & Steve,
As i have been reading posts here on this forum for some time now, i think i'm spotting a trend. Lots of brand new, first time hosts are approached with offers like yours, from 'guests' like yours. No profile, no verifications, no reviews. They purposely seek out inexperienced hosts as they are often eager to accept bookings of whatever nature. I would highly recommend you decline this one for a number of reasons, start with short term guests until you are more familiar with hosting and also get up to date with all the scams that are going around on airbnb.
Hosting somebody long term is VERY different versus short term. Just my opinion, good luck & happy hosting!