Very nice so far. I have the same kit in my stash and it is my plan too build the exact same livery that you are building.
This being said, i already noticed a fault with the decals regarding this livery. The decal of the russian flag on the tail is undersized. It should be about 30% larger, thats why i decided to paint that flag because it doesn't seem all that hard to do.
But once more, very nice build.
BTW, the tail decal is well suited for placement on 'normal' style russian airforce tails of an 124's. I have a picture of the 2 version parked together that shows the sized difference