I don't think the RAF ever used Hercules in the tanker role. They used Victors in 1982, maybe some VC10s. Later they used Tristars as well, but I don't think in 1982.
Airfields on those islands are still too far away to be much use anyway.
It's also a bit early for a Tornado strike. I think about 1 year after the Falklands they did their first long level practice strike - single Tornado, from UK to Cyprus, supported by tankers.
Seeing as most of the British paratroops were in the ships of the assault wave, a paradrop is rather pointless if not impossible. In OTL, some individual officers who were left behind in UK or Cyprus, did paradrop into the sea to reach the task force however - wear a survival suit, and you have about 2 minutes for a helicopter to pick you up, or you're dead.
If you want a paradrop in the Falklands, a more likely one is an Argentine one on San Carlos. Fear of this was why 40 commando was left there. Rapiers and sea dart, would however have inflicted heavy losses on the Argentine transports even before they dropped.
If you want RAF fast jets strike, the most likely option seems to be Buccaneers. When on Ark Royal, they had a buddy refueling capability, and so this, either Buccaneers refueling each other, or getting fuel from Victors/VC-10s is most likely I think.