Yes. Build when you are ready. Right now I'd focus on getting your setup working right for you. You can always start reading/looking now though, learning how to build and run a coil will probably help you isolate what is going on with your coils, it could certainly be bad coils/batches, but it could also be user error.
That said, on max VG with the wrong kind of juice, I can kill off a coil in about 4 days.
You know you *might* be able to reuse your coils more than once right? Some people are having success boiling them for about 20 mins, then drying very well, I use very hot tap water (but I have a crazy water filtration system) and leave my coils sit/soak for 12 hrs, then rinse/clean and set outside to dry for 12 hours... I can use them at least twice that way, sometimes 3 times... Coil life may decrease as you go.
Many folks say use distilled water, and that's often a good idea, I would've used it except we have a CRAYZEE water filtration system under the house with like 9 filters the Engineering husband rigged up.... This part of Tucson has HORRIBLE water.
That might help offset your coil cost until you get to rebuildables.
Best of luck,
Anna