If you run 50/75 you are going to end up wishing you ran 75/100 in my experience --- 50mg doesn't seem to do much for me, but 100 gives real gains. I took a bunch of worthless crap my first cycle(and in PCT) , afterwards I skipped it and didn't notice any difference. I've never taken Nolva only Tamoxifen, and I wouldn't even take that for another H-drol PCT since I don't think I need it , but your mileage may vary of course.
For juicing H-drol is really mild, I won't go so far as to say safe because I don't want to get flamed, but for the average guy all you have to do is pop the pills, eat, and pump some iron. I went from 170 to 190 in six weeks when I bumped up to 100mg, kind of backfired since I work in LE and it was obvious I was juicing.
GL bro and welcome to the dark side, you will never go back