Same here once I got boat on trailer with neighbors help I hoisted it right up, tested with earmuffs, hit the water next day. I'd test it out right now. to see if it all works. Hook up a hose first see if water comes out of right holes, replace gearbox oil, mix some gas/oil, and go for it in a bucket or with muffs.
You might be hard pressed on time if you take it to shop, somebody go over it, take it back, etc Although it might be good idea to replace impeller on older motor. Do you have any history on it? Let me know it you need help hoisting it or something. Mine was a bugger at 170 lbs.