I am impressed you got them in there.
I assume you put them in passenger side ?
I have room for a 2 bank charger on mine that connects to the passenger side. I am not sure if you have enough room for a 4 bank assumming you want one for the starting battery and all three for your Terrova. I do run a seperate little marine charger for my starting battary.
I have a kicker on my drive side that does caust a slight list, but it does not affect performance for me. Hard to say how yours will be affected with the weight on the other side.