Are you racing or just freeriding? If racing, the 111 is a bit large for winds over 25 knots, even for a 92kg sailor. A smaller iSonic would probably suit you better in winds from 25 to 30 knots. What is your next smaller board and do you have other sails below the 7.0?
Maybe another sailor at your weight with a 111 will jump in and give you some better advice.
If freeriding, I think you would do OK with a 6.2, but the 111 is a rough ride in heavy chop. For freeriding, I have a iS 111 and use a 6.6 on it in winds around 18-22 knots and it works great, but if the wind goes much over 20 knots, then I go down to a 6.0 sail and a 105 liter bump and jump board, which has a much smoother ride in rough water.
If you don't have any sails smaller than a 7.0, the 6.2 would be good to add to your quiver, even if you don't us it much with the 111. Eventually you likely go to a smaller board, and then the 6.2 should fit in very well.
Formula 160; iSonic 111; HiFly Move 105; Tiga 263; '85 Mistral Superlight.
Maui Sails TR 11.0; 9.2; 8.4; 7.6; 6.6; Maui Sails Switch 6.0; 5.2; Maui Sails Global 4.5; 4.0.