checking pushrod length

here is what i came up with for the adjustable 273 with Hughes hydraulic cam
6800 length pushrod collapsed
8 turns out @ 0.050 plus 6.800 equals 7.2
plus Hughes lifter preload of 0.090 plus 7.2 equals 7.29
minus 0.150 for cup gives me total length of 7.14

does this seem correct...i found proform pushrods 66417c with length of 7.190.. these should work