We are consistently 9 bossing now with one twist to Sterk's strategy:
DRG goes /drk for 1 extra absorber. Fights feel much safer as TP rarely goes over 300 with 4 absorbers.
I prioritize Jumps and WS's over absorb tp's but it's nice to get them in right after.
Here is the set I use that lands 100% with a 14 second recast timer:
ItemSet 403413
Cape has Fast Cast +10% and will land with just FC although I just added mag acc and INT to it because why not.
You can replace Weatherspoon ring for Rahab or Prolix as it's not required.
Magic accuracy does matter from my experience to land 100%. When I threw together a meh set to test out I would only land 1 out of every 4 or 5 absorb tp's.
Once I hit 100% land rate I noticed the absorbed amount was very very low compared to others.
With the gearset I posted it lands 100% and potency is on par with the group.
We pop a marine stewpot at the start and that's the food we use for the whole run minus our MNK.