Networking = a computer that talks to each of the solar charger converters *and* talks to current monitoring gear. It reads back from each charge converter what it has available and sets the parameters of the converter to do the best job possible.
Hookking panels in series or parallel has noting to do with networking independent charge converters.
With one AGM group 27 you will have about 50AH of usable capacity. If it's a group 24, you will be at about 40AH usable. It is not unusual to only get to 80% capacity in a "quick charge" situation. That drops you back to 30Ah for the group 27 and a bit over 20AH for the group 24.
One of the most common things to do when running on battery is to over estimate the power available. The result is permanently trashing the battery in fairly short order. One then blames the result on everything and anything *other* than "I made a mistake".