Sorry to be slow to reply. I've been out running errands all day. (Even Watermom has a life outside of this forum! )

Bleach is not going to affect your pH much. However, since you need chlorine, are fighting high pH and need CYA, a good choice for you would be to use dichlor. It will add the needed things and the acidity of it will lower your pH some. You actually might benefit from using our Super Simple Startup Recipe since this a new fill. Info about that can be found at this link: http://pool9.net/ssr/ (It is appropriate for any freshly filled pool -- not just Intex.)

I think you are going to find that a CYA of 25 is too low. It is simply too hard to keep chlorine in a pool at that level especially on hot sunny days and in Texas, you're going to have plenty of them. I would suggest at least 40-50 as a target.

If you decide that you don't want to use the 'recipe' but instead are going to use bleach and add CYA separately, every pound of stabilizer will add 10ppm of CYA. Also, in your pool, each quart of 8.25% bleach will add about 1.5ppm of chlorine and each 121-oz jug will add about 5.6ppm. Use those as a reference as you are figuring out how much to add.

Hope this helps.