Looks like the individual Hughes rockers would cost roughly $256.
If considering that option…….I’d buy one 1.6 and one 1.7, and mock them up and check for true net ratio, and how they impact pushrod clearance.
Then decide on which ratio to buy.

If the 1.7’s are close to 1.6 net……and the pushrods aren’t too much of a fit problem…….I don’t see any reason not to go that way.

Btw, the old MP blue rockers were Cranes.
The few sets of those I measured(1.5’s) were in that 1.55 ratio range when using checking springs.