A year is too long without significant suppression of your FSH/LH. If this is your plan you should be implementing 500-1000iu of HCG or Gonadorelin weekly, during the entire run.
From here on I will refer to them as one in the same for simplicity.
HCG will help keep your body producing natural testosterone, keep your sexual function proper, and not inhibit sperm production and motility.
One thing most people don't understand about fertility is it's quality over quantity. You can have a low sperm count and get someone pregnant, if your motility is good. Hence how people who've been on steroids/TRT for years still have children even with the suppression they should have experienced. HCG helps with this, also does HMG as a secondary resort on top of using HCG at the time of desired fertility.
Personally I would recommend 12-16 weeks of usage. HCG use the entire time (makes PCT a breeze and it's CHEAP compared to losing your hard work).
Once you end your cycle. I would continue HCG use for 2 weeks, while starting a regular ancillary protocol. Then discontinue HCG use, continue ancillary protocol.
I would either wait to add the anavar in, and see how you react to 4-500mg test, get your blood work done at week 5-6, 48 hours after an injection, and see where your serum levels are (this will also tell you about the authenticity of your supply and how to adjust dosing in the future). Then add the var in later on.
Enough for one post