Saturation Index (SI), SWG, and Above Ground Pools

[16X32AG_Bob]

I have a 16x33 AG pool with deep end to 6 feet. Volume about 14,000 gallons. I have a Pool Pilot Digital with a SC48 Cell.

Current readings:
Temp: 80F
PH: 7.2
TA: 60
CH: 60
CYA: 30
Salt: 3200
FC: 4.5 - 5.0
CC: 0.5

TDS: ???

With a vinyl liner, I have never concerned myself with CH levels and only maintain TA to stabilize my PH. With my new SWCG, do I need to be concerned with maintaining a proper Saturation Index to preserve my SWG Cell?

With the above readings, my SI must be around a -1.5 (goal being 0.0 +/- 0.3). By the book, this makes my water more (much more) corrosive.

Should I focus on raising my CH, TA, both... or not worry as I have a vinyl liner?

Thanks - Bob