New test kit? Does that mean there's an old one around? If it tests pH and hopefully TA, you can get started.
You know that a fresh fill will have zero CYA and so little unstabilized FC (if any) that it'll be gone in a couple hours.
You don't care if the CH is low on a vinyl liner pool, and if it starts out high, there's isn't much you can do about it since the replacement water will be identical.
That leaves pH and TA to deal with. And for those, you need some type of tester.
Get it full of water and circulating and check for leaks. The installer will do that. Hopefully he'll also rinse the sand, but that's another topic. You could ask him to test pH and TA for you. He might have a kit. Ideally, though, you'll do it yourself.
There may be some algae residual in the filter and plumbing, so I'd suggest taking the pool to shock level immediately. Don't worry, it won't stay there for long. You'll be able to swim in it if it's not too cold for you.
So... first thing, add bleach to get to 10 FC
Second, CYA to get to your target. 50 is not bad for Texas. Mess around with the granules and the socks and get that in the pool.
Third, if you have pH and TA readings, and pH is between 7.2 and 7.8 you're good to go. If pH is high or low, plug 'em into poolmath and get the dose to fix it.
Do you know how to use poolmath? Now's the time to speak up. After you added too much of something is too late.
Post back and let us know how it's going. We'll keep that pool from going green on you this year. Check out this thread. Just bought and filled a week ago, You can have this too.