I have always used Future over the BMF and have never had any issues with yellowing or foil coming loose later on. This also insures that when handling the model that I do not wear off the BMF along the drip rails or other areas that get a lot of handling.
Beautiful car. A good friend of mine had one in silver with the black vinyl roof back in 1969 before he traded it in for a VW Bug! If I remember right, it had something to do with speeding tickets!