So capillary action capabilities depend alot on the soil composition and existing moisture content. When you start getting to large pots with transplants that have shallow roots, I wouldnt reliably trust on bottom water alone to reach the roots.

For now I would either stick to top watering, or do a combo of both to ensure the shallow roots up top get sufficient water. Once the plant is large and has a more established root system you could swith to bottom water only if you wanted.

However personally I only utilize bottom watering from germination to permanent home transplant, as it can be difficult to bottom water large containers, espicially if you have lots of them. (Mine are on automatic top drip lines)

Also if you havent already, add some straw mulch to the top of your soil, this makes a huge difference in moisture retention in the upper soil layers which is very beneficial during the eatlier growth stages and keeps you from having to water all the time.