Hi Rich,
I did that same kit in BMF. I did the small parts like flaps and undercarriage covers separately (and first) to gain confidence. (The horizontal stab was already glued in place when I started foiling.) If memory serves, I did wings, then tail, then fuse last.
I masked the forward top fuselage with Tamiya tape and airbrushed acrylic, no problems there.
Will post a pic if I figure out how.
There's an article in the Feature Stories here on FSM about foiling a P-38, I more or less used that procedure.
Best of luck,
Andre
P.S. Here is the link to the article:
http://www.finescale.com/fsm/default.aspx?c=a&id=283
P.P.S. I used the steel wool to roughen the foil before masking and painting (then Future after painting), don't know if that roughening improved the performance of tape or paint.