Setting up off grid system

[maple flats]

I have a camp that I am hooking up some off grid power. Grid tie not possible, way too far away (miles).
I have 6 Solar World SW285 mono panels, a Morning Star TriStar MPPT-60 CC and I am connecting to 4 Rolls 6CS-21P batteries, in series for a 24V bank. I think I used some wrong info when I ran the string calculator originally, but now I'm getting an answer that I can hook 3 panels in series for 1 string or 2 strings of 2, but not 3 strings of 2 for the 6 panels I have. The specs are
285watt
Voc 39.7
Vmp 31.3
Isc 9.84
Imp 9.20
Temp coeff. Voc -0.163 V/ degree C
temp coeff. Isc %/ degree C 0.040
Temp coeff. Pmax %/ degree K -0.300
Can I connect this using 2 charge controllers, just buy another TriStar MPPT-60 and have each hooked up on a single string of 3, both charging the single battery bank? Or do I need to get a bigger CC and then sell the one I have?
This is all being connected to an Outback VFX3524 inverter.
All of the equipment mentioned I have, except the second Tristar MPPT-60 charge controller.
Please advise.

[Mike90250]

The deal killer is 3 panels in series, 39.7 x 3 = 120V @ 70F Take that to a frosty cold temp, and you will exceed the 150V threshold of the controller.

So, just use 2 panels in series Voc would be 79.4v and even when cold, below the kill voltage.

TS-MPPT 60 is 60A at 26V, so that would be 1560watts. Your array would seldom (but possibly be able to) exceed that wattage, The TS-MPPT-60 is a pretty rugged controller, and will throttle itself back to stay within safe power range.. I would feel comfortable using those 6 panels wired 2 in series, 3 parallel strings. with it.
(In fact, I did that last week 5 breakers, and still have to weatherproof the PV joints)

https://www.facebook.com/media/set/?set=a.1165519796854805.1073741845.120212794718849&type=3

[maple flats]

The record low there was -35 F back in 1957, but that was back 59 yrs ago. Maybe with global warming I could figure it at more like -20 F?