Var is not a weak steroid. If it's legitimate from a great chef, 60mg-100mg is very scary. 60-70mg of Defiant's will wreck you lipids, much similar to 75mg of Brinkmann's. The question is how fast does it recover?
Provided you stay away from alcohol and other liver influencing drugs, you are fine, just check your values about 20 days after your last daily dosage and you'll be fine. Orals year-round, now that's a harm. For spurts? Not a big deal.
BTW, var is a crazy good drug. 25mg three times a day, you must drink a lot of water cause you'll cramp up and get headaches. It gets you a certain level of vascularity that's unmatched.