Push to failure

Friday afternoon, tried to get both parts of this workout in but halved the second part. Here's what I did:

A1: slow-tempo ring dips (amrap -1): 10, 10, 8
A2. gh raises 3 x 15, slow
B1. clapping push-ups amrap
B2: back extensions 3 x 25
C1. close grip push-ups amrap
C2. low pulley pull-throughs 3 x 20

(don't have numbers for amraps. all #s in mid-teens)

Then, 3 sets of this:

60 second run at 80%
60 second box jump at 90% (16" box?)
60 second double-unders
8 min rest

box jumps: 25, 25, 25
double unders: 48, 62, 70