I usually put about half as many holes in my pots, but that is okay if you have extra!!
Phals do just fine in big, chunky bark. You might also enjoy putting an orchid on a mount if you are scared of overwatering. You just need some sphagnum moss, fishing line, the sterile stick/mount of your choice, and the orchid!
It's supposedly impossible to overwater mounted orchids
I think you're on the right track with what you're doing. Now you just have to learn when to leave the orchids alone so you don't love them to death (ahem, that seems to be a problem that I have, haha!!). Welcome and enjoy!!