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Glue won't have the strength needed for covering the foam.
The majority of the structural strength of this vehicle will come from the resin impregnated covering. The foam mostly just keeps the covering braced in position so it cannot buckle under loads. All the compound curves you have will also contribute a lot to the rigidity of the body.
Glass is strong and relatively inexpensive but heavy. Carbon fiber is stronger and lighter than glass but expensive. Kevlar is a possibility, lighter than glass but IIRC not as stiff.
If you could dissolve the foam and glue out after encasing it, the body very likely wouldn't lose anything but the weight of the foam and glue.
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