OK, but now you'll get 20 units of fuel by tapping 1-hour-option twice and you'll spend only 160 coins. If you choose 8-hours-option, you'll get 15 units, spend 250 coins and you'll have to wait 8 hours for finish. That's why I consider 3rd and 4th option of getting additional fuel as useless - they're cost and time consuming and increment of fuel is not worth of it.
No problem at all. It was bright lantern (why is it still on the gift list?), thank you for it.
I'd help you with your launch, but I joined other launch few hours ago.