It seems like we all disagree on the fina doses. Whatever works for everyone else is fine. The smaller amounts of gear that you can use and grow from are obviously much safer.
I just ran my first cycle of test enanth at 500mg/week and fina 75mg eod. I gained 25lbs. in ten weeks have next to no water weight. I am very happy with it. You will feel the fina kicking in in about 8-10 days. My next cycle will be 650mg/week test and 125 eod of fina if the fina doesn't lock me up too much.
I think you should start fina at 75mg eod for a few weeks and see how you react. For the first eight weeks it made my body so tight that I could barely do more than two sets of biceps and I was drinking plenty of water. If you need more you can bump it, but remember tren is pretty mean stuff. If I would have started at 75mg ed, then I would have probably stopped it. It made it ruff to finish work outs some days and if you can't work out, you can't grow. And damn the fina kept me up for about three weeks. It made it tuff to sleep, then it gives you bad night sweats. Other than that, it is great.