Firstly test doesn't need to be run as a base at all... internet crap. Sure you should have some in there for libido etc.
My pic is not good but ok... anyway been on 750mg deca and 300mg test and I am 15 pounds heavier than that pic and in better condition (6ft 2 242 pounds). I was on the opposite and was puffy and moonfaced. My libido is high and I feel great. I use an anabolic as my base and add test when needed. Sure high test can be great too... as long as you have GH in your blood. As I have just started GH for the first time at only 2IU not gonna up the test till that is more 5IU.
Although I am puzzled why you would run deca and want to maintain weight. Were you 'cutting'... trying to lose bodyfat whilst increasing lean muscle, thus, stay about the same weight.
You don't need tren at your stats. What are you trying to do? What are your goals?
Look into test and masteron, test and anavar etc.