If you can manage, I would order the fabric through Spoonflower rather than printing it on a home printer. For something so cherished, professional printing really is the only thing that will last. I've done the printable sheets & they're okay, but definitely not permanent. With a little bit of organizing before you upload, you could get multiple pictures on some of the fat quarters. Your "photo" can be up to 11x11 so if you set your photos into rows of 3x2" before you upload, you'll get more mileage. Unfortunately, Spoonflower doesn't let you upload multiple photos to the same cut of fabric. If you have $120 to spend on photo fabric, that's without a doubt the way I'd go. I spend the extra couple bucks for the Kona cotton fabric. It's a slightly denser fabric which yields higher quality photos, but still needles well.
Your cheapest option is to get Bubble Jet Set & run the fabric through your own ink jet printer at home. It gives a faded look to your photos (and continues to fade even more with each wash or exposure to UV light). Printing that many photos is bound to use up your black & color cartridges so be sure to calculate that into the cost. I've found that for me, it's usually about the same cost to print at home vs. Spoonflower.