floating bricks are awful for something like this imo
if it's just for aesthetic use, it's fine, but if you intend to build on it it's p bad. i know you can use zone cubes or w/e, but it's really just a big inconvenience
it has to be said that the end result is pretty with this regardless, so if you do happen to use it for prettiness only, it's a good option
overall great excluding my gripe about floating from what i see