Pot volume or height?

I was planning on potting my plants into 35cm (W) x 33cm (H) 28L (6 gal) pots but was wondering if 36cm (W) x 23cm (H) 21L (4.6 gal) pots would be ok? My main concern is whether the 23cm depth will be enough for the roots and stability. I’m growing scotch bonnets, fatallis, Trinidad moruga scorpions and Thai dragons. Thanks!