safe compound liver wise and you talk about Oral? LOL
Anavar max 6 weeks. I felt sick after 5 weeks of Anavar, didn't want to eat and my stool was awfull. Had to stop because toxicity was trough the roof. I'm probably very sensitive to orals but... you can do 40mg and still have good results. No need of high dosages, A friend of mine is doing 20mg and getting very good results.
Your trt docs will not detect any AAS that isn't TEST or other AAS that screw up test/e2 results (tren/deca). The rest should not change values on your blood test, except maybe a bit RCB (Equipose).
Orals will increase liver values over the limit 100% it will take few weeks or 1-2 month to get back at normal level.
I suggest you don't use orals, they are not worth the side effect most of the time.
Proviron doesn't give you any anabolic effect, only helps with libido, hardens up a bit maybe. Primobolan orally is crazy shit load of money not worth it.
Anavar, if real is good oral... but as I said.. in the long term I prefer to avoid orals, and only inject.
You could add Equipose to your trt dosage, it's quite an interesting compound.
or go with NPP (short ester deca).
If you want to cut and dry you out, it's all diet, compound wise EQ for 14-16 weeks and masteron the last 4-6 weeks will surely give you good results.