Leica--thank you for showing us the bottom of your pots. I think you have too many holes; this is good
better to have too many than not enough!
But, think about having to get the pot ready with screens...I like to wire the screen in and it takes a while for me to do it correctly. 3 drain holes can be a lot of work but one of your pots has twice that many. Maybe you could have fewer drain holes and make them slightly larger
I don't see this as a huge problem. I'm sure you'll catch on as you see more and more actual bonsai pots. It's also good you will have a wheel but what I like about your pots is the handbuilding gives them a personal quality that wheel-thrown pots just don't have. Most wheel-thrown pots look so perfect as though they were made by a machine and not a person.