. . . gear lever is stuck on 1 and the rear wheel and kickstand are also stuck . . .
Do you mean the bike is stuck in gear? That would account for the rear wheel being stuck. The engine needs to be running for the gear change to be easy but you can change gear by turning the rear wheel at the same time as you pull the clutch and move the gear lever. Either put the bike on the centre stand and turn the wheel as you pull the clutch/move the lever - easier if you have an assistant - or push the bike a little way to and fro.
Kickstand stuck sounds like it needs lubing - penetrating oil like 3-in1 or a good squirt of WD40 then might take some time for the oil to work its way in.
Glad to hear you will clean the carbs before trying to start the motor. Search for and read some of the threads on the forum about starting a bike for the first time after a long lay-up, there's lots of good advice, though sometimes errs on the side of council of perfection. But try not to be too impatient - slow and steady wins the race or similar cliché.