Help Need To Go Solar!

Going solar is much harder then my family and I anticipated. My family and I currently decided to go solar because we power our home with a generator, With the cost of gasoline on the rise are cost per month to stay cool in the Arizona heat has trippled and we simply can't afford over $1,000 dollars a month not including the matinance on the generator. We have got everything needed to run on solar except for a good deep cell solar battery. The cost for a good deep cell battery is more then we can afford. The PHI 3.5TM kWh 60 Amp deep-cycle Lithium Ferro Phosphate (LFP) battery will cost $2,895.00. I know this is a far shot request for help but its much needed and I'm willing to try campaigning for help . My husband and I take care of his father a 79 yr. Old war vet and our son who is 17 yrs. Of age and soon to be joining the army himself. We are also open to receiving a donated 48v/220 deep cell battery. Any help even a little would mean so much to us and we humbly thank you for taking the time to read this and if you donated again Thank You So so much.