I'd scale it back even more. The while packet is for 5 gallons now that I think of it. So if you are doing a 2.5 gallon batch pitch half the packet.
I pitched about 2 grams of 1118 into 1 gallon of juice with roughly half a pound of brown sugar and that was plenty to get through top up with about a quart going into secondary (fired up easily). Good carbonation at bottling with priming too. FG was .996.
As stated in my last post (in my thread), I think I'll take one of the last 2 brands of juice, and make an alternate batch with 3068.
So end result will be 3 batches with 1118 and 1 batch with 3068... and once those are done fermenting, I'll just keep pushing through ciders with different juice/yeast combos.