I have not done tren yet, but from my research I would say way too much test. Drop test to somewhere around 200-350 per week.
Tren is prioritized at the receptors and the test is just floating around leading to increased sides with higher test doses. Also from my research, pinning tren ED seems to limit sides vs EOD.
I am planning to pin 75mg test prop EOD and 50mg tren ED on my next cycle as a consequence.
They are both oil based, so yes. Only thing is that personally, I find injecting more than 1ml in the same site a bit irritating. Only did that twice when front loading a cycle, but I didn't like it much.