The soft CFL's are not going to give you as good of results as warm or cool, 6500k for veg and 2500 to 3000k for flower. As for the foil I would leav it, just make sure that the dull side is the side showing. I need to get my wife to post some picks of my veg box with foil. Yes, flat white paint and milar are better, but in my veg cab I have absolutly no complaints. When I am done with my new 1000w cab I will probably change out the foil in my mother/clone cab, but it has worked vary nicely for all of the slack it gets.
Adieu