Ms. Marvel - 23 issues (1977-79) in two MMW volumes or 1 Epic.

(The Man Called) Nova - 21 issues (1976-78) in two MMW volumes or 1 Epic.

What If?: The Silver Age Alternate Realities - which could encompass issues 1-12 in one MMW volume (then later 18, 19, 21, 22, 29, 36, etc. in a second MMW, or all in 1 Epic)

Moon Knight has got enough '70s appearances to fill a first volume of MMW. Even after he got his own series in 1980, it only last 30-odd issues or so (the Sienkiewicz's anyway). Done in five MMW volumes maybe. This would be the Bronze Age collection I'd be most interested in, although again I'd probably prefer it in 3 Epic volumes.