My .02 cents worth. I have enclosed a photo of 5 sheeted foam wings. 1 giant stinger, 2 Stinger 120, 1 Stinger 60, and 1 stinger 40. The 40 size is sheetet with 3M 77 contact cement. A lot of people do not like this glue because it separates. This one has been sheeted for more than 5 yrs and there is no separation. I have sheeted a lot of wings with this glue and never had a separation.
One of the other wings was sheeted with slow epoxy. The other three wings are sheeted with ELmer's Probon. I like this glue the best. The wing is solid as a rock. The 40 is sheeted with 1/16".
All of the others are sheeted with 3/32". The kits call for partial sheeting of the wing. but I sheeted the entire wing. This adds a lot of strength without a lot of weight. All of the 4 larger wings were vacuum bagged.
Good luck
Lee