let me guess
I say you gain 18 and keep 11.5lbs.
I also think you'll get stronger,increased vascularity, your appetite will increase, you'll bloat (but you didn't say what kind of test, I assume it's cyp or enth).
You should expect testicular atrophy. possible acne. bro a lot of shit can happen. I hope you have you're post cycle lined up. And if anything out of the ordinary pops up you should be aware of how to combat it. such as gyno, hair loss, etc. Your question isn't a very good one, but you're not the 1st to ask, and there are no stupid questions just stupid people. It's a vague question that can't be given a specific answer. Using roids is an experiment and your choice in substance is a hypothesis. Also every indiv.'s uptake and response can differ. So if you take two diff. people put them on the smae cycle say 400eq 500test 12wks. Would their results be the same. Depends also on the diet on training, get my point. I don't know what's going to happen till after it happens. But you should expect to enjoy that cycle. Eq is slow to kick in so you must be patient. At first it seems liek it doesn''t even do anything which is about right to a certain extent, cause it's mild and it creeps up on you nonchalantly.
I also othink you should do test only first you first go around .
"Just be happy with yourself. Be happy to be alive, be happy you are not over in Iraq, be happy you have your health".