My local pet store is over an hour from my house and we rarely go every 3 months. I believe our local walmart has test strips but I don't know about the Api thing. The walmart also has I believe ammonia test stripes but I would have to check again. I was hoping to have the tank cycled. I still need to clean it but I have no clue how yet.
To clean the tank use Vinegar and water. Just let it soak and then scrub away.
Just rinse like crazy afterwards and you will be fine.
Does this walmart have a fish section where they sell fish? If so see if they can test your water.
Due to your distance and the LFS being so far away I would recommend you getting live plants so you can afford to put more fish in at once time. Look into Java Fern, Hornwort and Java Moss. They are great low light plants that will help the tank.
If you have real plants I would say you could add 6-8 MAX fish per week without disturbing the tank.
When is the next time you plan on making it out to this LFS?
The kit is $9 online.
For pH, Ammonia, Nitrite and Nitrate You can get strips for now if you don't want to spend that much money but I would really recommend you get this:
PetCo Is having a 20% Online sale. I would get it there as its normally over $30.
API Freshwater Master Test Kit at PETCO
Not necessary but highly recommended (the API Master Test Kit) because it is more accurate than strips.
As for the gH and kH if you can find out that information or get the test kit it would really benefit the fish and your choices.
Because you have well water, I would HIGHLY suggest getting both of these kits because you cannot be sure what you are putting into the tank. This would be a very good long term investment.