Why so much filtration on a planted tank? The plants are a filter in and of themselves - I run a power filter just for water movement, my plants are my primary filter.
Anyhoo, that arrangement looks fine, but there's also no reason one or both spray bars can't be mounted on the back of the tank as well. You're going to get current to matter what, can't be helped. What you have outlined there though will be fine.
We're not dealing with corals here, plants need very little water flow over their leaves, and too much is counter productive.