If you are dead set on running d/bol or t/bol @ the beginning and winny @ the end, have a break in between of at least a few weeks and run milk thistle during the whole cycle. I would do something like this:
D/bol 1-4 @ 20 mgs ED (d/bol is VERY strong IMO...less is more for me)
Test E 1-12 @ 250 EW
Winny 9-12 @ 50 mgs ED
Milk thistle 1-12 500 mgs ED
personally, my PCT would be something like this, but you may have a better "cocktail" for yourself:
HCG 14-16 500 iu E3 days
clomid 15-16 @ 50mg ED
One of PP's topical formulas (the name escapes me right now) weeks 15-20
If you are a true hard gainer then 5,000 cals ED is essential....and I would carb cycle
just my 2cents
good luck!