You do need a lot of water with spiro. 8 cups is not a lot of water. 8 cups is what is recommended for normal folks doing normal daily activities. Add in heat or exercise and the requirements go up. Look at this way... 8 cups is 64 oz.. Same as a super-sized soda that some folks do several of a day. (Or about 5 bottles of beer

)Think about double that amount of water.
If the E is an oral and you are swallowing it, there is a bit of an extra strain on the liver. Water helps in reducing that too.
A good indicator is urine color. If it has any, you need more water

Yes, it sucks having to pee every 20-30 minutes when it comes out as fast as it goes in
Also watch your foods. I think with spiro you need to watch your potassium intake. Please research that out for what types of foods and supplements to avoid.
Eventually an anti-androgen will likely help with acne problems. I had very very oily skin before HRT. Now it is fine to dry. Starting both E & an AA will take a while for your body to settle in. You need to give it a few weeks.