You should get full blood work done. Total t, free t, shbg, e2, lh, fsh. I might be missing a few items in that list.
Your total t is not super low, but if your free t is low, you will get the symptoms you are describing. There are cases of people having higher total t than you, but because of high shbg, they have low free t.
100 mg of test a week, might make your levels lower than they are now (depends on your shbg, and overall size). In general, the average man will get 585 ng/dl on 100 mg of test a week with two injections. See this thread for the discussion.
Lots of variability in those values, but that is the average. You really are not going to get much out of this.
You may feel better for twelve weeks, but I really doubt you will end up with higher levels naturally after pct. If you want to do this, really think hard about it, and if it is right, just do trt.