Agree. I personally wouldn't exceed 10-14 week cycles, unless you plan on competing/making a living out of it.
If you are planning on cruising, even at a low dose, monthly bloodwork is a necessity IMO.
Now if you get perma-shutdown, thats pinning weekly for the rest of your life, along with bloodwork monthly. Its also very possibly having to resort to getting the testosterone illegally, chances are you wont be so lucky with an endo. Now what if your source gets busted (which happens all the time)? What if you can find a new source? Remember, this COULD be long term (if you get perma-shutdown), laws could tighten by the time you're older, making it very hard and risky to get/use your test, that you rely on.
Your goal is easily achievable without resorting to such cycles, just my $0.02