This is a chicken and egg question. Can't recommend amounts without the test. If ph is high then you need something to lower it, if it is low you need something to raise it. Same with everything else so you will end up with twice as much stuff as you need and some that you will likely never need. My ph is high and I need to lower it regularly, if I bought something to raise ph it would just sit there forever because I have never needed to.
But, you will need CYA/stabilizer and bleach to start. The rest can wait until you can test the water.
Here is some good info on maintaining your water that will help you understand water chemistry,
ABC's of Pool Water Chemistry
According to
PoolMath your pool is 13,500 gallons. Based on the
Recommended Levels you need to have a CYA level of 30-50, so with a target of 40 according to
PoolMath you need to add 75oz of granular CYA/stabilizer. According to the
Chlorine CYA Chart your FC target is 5, to go from 0ppm to 5ppm of FC you need to add 102oz of 8.25% bleach. From there you will need to add around 2-4ppm of bleach daily depending on sun, bather load, debris, etc.
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p.s. to add CYA to your pool put it in a sock, tie it closed and put it in the skimmer or hang it over the side. Give it a squeeze regularly to help it dissolve faster. It will take a couple of days to dissolve and a week to fully register on the test.