Depends on if you are going to try and lower your alk or just let it stay where it is. Go back and read the "lowering ak" link I put in post #8. Alk of 180 is a little high, but not super critical on a vinyl pool. You can decide whether or not you want to lower it some. Generally, 80-120 is what we suggest.

If you are going to try and lower it, you'll want to drop your pH per the link I mentioned. If not, then 7.4 is OK.