Wow! I'm impressed. Looks like the Revell kit, though it very well may be the old Monogram and was carried over when Revell took over. Either way, beautiful job! I'm like you, I've been impressed by the weathering envolved now and the use of air brushes. Shoot, back during the late 70's and 80's I'd just slap a coat of paint on the thing after putting it together! Now, it's a continuous process of the build.
I can't offer any suggestions as far as a diorama... I've yet to try my hand at that, something that is going to change soon. Again, great job! Come visit us over on the Aircraft portion of the forum. Thanks for sharing, Raymond