First, you are installing a bigger solar charge controller than is needed for your current project (do you have expansion plans?.
For 24v system the mppt 150/85 can handle 2400w of solar (you only have 1600w)
A 150/70 can handle 2000w
A 150/60 can handle 1720w.
The 150/60 is probably a lot cheaper and will still provide all the power you can produce. You could drop to a mppt 100-50, but you would be clipping your power at 1400w. Which is probably fine because your panels will probably never produce that much because they are flat mounted.
Second, read Victron’s “wiring unlimited” your batteries need the + on one side of the bank and the - on the other side. Or the batteries attached to a bus bar (which is what I would do with three sets).
Third, you need a shunt based battery monitor - Victron Smartshunt or BMV712. Read up on the mid-point monitoring. That way you can know when the two half’s of the battery start to get off.
You have a good start on your drawing- but it is not complete yet - keep filling it in. Will you have a distribution bus bar to combine all your loads?