Taking clones to do first hempy bucket grow, should I plant them in rockwool?

I am taking clones in the next day or so from my White WIdow mother, which will be going into my first few hempy buckets.

Would there be any problem with planting them into rockwool, then planting the rockwool into perlite once they develop roots?

I also considered making a mini "hempy cup" out of a 16oz solo cup, with a hole 1" up, to help speed up the initial slow growth phase, then transplanting them into 2.5 gallon buckets once the root hit the res on the solo cups... Would I be better off planting the rockwool cube right into a 2.5 gallon bucket and skipping the solo cup idea?

Thanks in advance for any advice!

You can do that, I recently started cloning directly into perlite. It is better to go with whatever you are used to doing. I used to clone into soil with peat pots and plant the whole thing into 20 oz hempy cup and then hempy coffe can and then finally into 5 gal hempy buckets. Good luck.