I don't believe in Holy lenses. There are many sets that work well for different people. I like more modern lenses for general use. 110mm super symmar xl, 180mm Nikon W, 300mm Nikon M is what I like and am currently using. I spent less than $350 on each of them. The super symmar is only marked for f/45, but goes about 2/3 of a stop more than that.
I like to space the lenses around an approximate 1.5 multiplier. I start with a lens with the equivalent filed of view of a 35mm lens in 35mm. This is roughly a 180mm for 5x7. So ideally I would have a 120mm and a 270mm, but it's close enough.