I've been doing TRT for about a year now since my last cycle ended. Due to the small amount injected (using Test E 250, 0.25ml injected E3D) I've been using slin pins into either the lats or quads (relatively low bodyfat areas). The mix I am planning on ordering would be Test E/EQ at 200 each per ml, so that may thicken it up a little (possibly?).
My cycle plan is 1ml E3D, and would most likely be using full needles at either 27 or 23ga. I have some 1ml slin pins, but they are still no more than 3/4" length at best (so probably too short).
I haven't decided on cycle length yet - either 8 or 12 depending on some potential scheduling issues - so I am ordering a separate vial of EQ 200 in order to up the EQ dosage. Planning mainly a recomp cycle, but a little muscle gain wouldn't be a bad thing. Just don't want to put on too much from where I am - I'm 6' and hovering around 220-225. I think I'd be fine at up to 235, but don't want to go above that. Still need to be able to move, so any weight gain has to stay below the point of getting in my own way. And to clarify upping the EQ dosage after saying that, everyone I've read that used EQ said it takes a while to kick in which is why everyone uses it for longer cycles. But I've also read of people who used it as short as 8 weeks and still saw the results they wanted, and some of those advocated going a little higher for the shorter cycle (in my case, that would be an average of 466mg/week vs 583-700mg/week depending on how much EQ I add). And to answer that question, I would prefer to keep it at the lower end for this first one (never used EQ before).
OK, long drawn out post over.