GT New Horizons updated to version 220.127.116.11
Better Questing 1.0.173d unofficial
Standart Expansion 1.0.108a_unofficial
Gregtech(Ore Size in DD set to 32(was 64))
Type in the modpack name (GT New Horizons) or paste the following url into the search box.
Finally, click Install at the bottom right of the launcher after you select GT New Horizons from the list on the left. The launcher will handle everything else!