both winny oral and injectable are a bit more harsh on the liver. It still has to be metabolized by the liver at some point. It just seems like a lot with both of those in there, and there isn't enough of a difference (IMO) between winny and mast to gain any additional benefit that outweighs the cons of liver stress (given the high-dose anavar for 8 weeks).
Honestly I like the cycle, it's just the total oral dose of 100+mg/day, especially for such a long period, that bothers me. Considering orals are typically used as kickstarts, and seeing as how you have short-estered gear, they aren't necessary for this. The next reason to use them would be synergy. Now you have to look at how they work and if the benefits of using orals outweights the cons. In this case I would recommend ditching one or the other, and potentially lowering the overall dose if running for eight weeks straight.