don't waste ur time on anavar. it will most likely either be fake or some other cheaper steroid (like winstrol).
with that said, I wouldn't waste time with winstrol either (really only useful for the final 8 weeks of contest prep to be combined with masteron, halotestin, and other drugs to provide you with that very crisp look (that you only get when you are very, very lean..a true 3-4% BF)
your cycle looks fine
but I would shorten it to 10 weeks, increase the dose of test... if you can run 500mg for 14 weeks, then you can run 700 for 10 weeks. i would run dbol throughout the entire cycle.. test is a very solid compound (my favorite injectable), and dbol is a fantastic oral for strength and size.
don't listen to what others say about water retention, it's nonsense. sure, both dbol and test will make you store excess water (both subcutaneously and intramuscularly), but you definitely want that water to be there to help cushion your joints.
people complain about the gains from dbol being lost rapidly upon cessation... of course the gains will be lost quickly if you only run it for 4 weeks at 30mg/day. how much would you expect to gain from running 210mg of test/week for only 4 weeks?
this simple logic eludes them for some reason.
your liver will be fine, especially if you are using tudca. I wouldn't waste time or money on milk thistle, as the important component (silymarin) is often of very low concentration/poor quality. Tudca is very potent for liver protection.
10 weeks of test E
12 weeks of dbol (so that you still have the 'boost' from dbol as the test E clears your system before pct).
adex .5mg ED
pct, as you outlined.
this may be a more aggressive course than most would recommend on this site.. but these are steroids we are talking about. you would be shocked to read what many of the larger folk use (especially powerlifters).
avoid painkillers, alcohol, Tylenol, NSAIDS, rec drugs, etc.
and keep your blood pressure under control (very, very important).