Its fine as long as you can wait the 80 hrs.
The CBA battery analyzer is limited on how much wattage it can handle.
Unfortunately that's pretty much all you get.
If you had another known, fixed load you could apply that and do the math to speed it up.
For a higher current test with your pack I would say (for example) put 9a on another load and 3a on the cba, total 12a.
Then just multiply the result from the CBA by 4 to get the tested capacity.
You could go much higher on the auxiliary load though as long as youre able to and you don't need to go that simple on the ratio.
Like 3a on the cba and 50a on the auxiliary load gives you 53a actual, so you'd multiply the cba ah result by 17.666....
Only really works as long as you keep the auxiliary load constant of course.
However if this is for warranty purposes with a Chinese seller unfortunately they only accept results if they are done per-cell.