Hmmmm, I will second Jesse's recommendation to not use Future as the base coat. However, not for the same reason. I've tested a number of solvents on top of Future and have had nothing attack the finish except alcohols and the more aggressive decal solutions like solvaset. If you leave water on it and the Future is not 100% dry, it will cloud up, but this is nothing another application of Future won't fix.
My reason for not using Future as the basecoat is that it can be too glossy and smooth to get the wash to stick where you want. I've encountered this problem myself, especially with water based washes. To remedy this, I have been applying a coat of dullcoat after the decals, then acrylic wash, then another coat of Future or dullcoat. Seems to work okay. I do lose some of the wash detail if I am heavy handed in spraying the Future.
All this being said, I've read the recommendations of oil washes and using Tamiya flat base to dull Future. I'm going to give it a shot. If it works, I could then get away from lacquer dullcoat altogether.
Hope this helps.