for general cleaning I like to use a 50/50 mix of denatured alcohol and water in a spray bottle, and some paper towels work great for cutting the grease and grime, the mix evaporates quickly but willremove most of the oil you get from glow fuel.

as for the plane it would be handy to have the remaining bits of the fuse to get the rite H stab incidence otherwise the repair looks pretty minor in its condition just patch the areas where the film is ripped and get the tail feathers on strait and fly it like ya stole it if it survives you could recover it later but have fun first