I think you need to make a decision on bulking or cutting. 6% is what pro's are at stepping on stage. Honestly it seems like you are a little confused as to what AAS can do for you, and ways to use them. I'm not bashing you in any way, I'm just trying to figure this out.

I would much rather be 200lbs at 12% then be 160 at 1% BF unless you are 5'1. I guess this comes down to you and your goals. If you want size then you need to eat. I don't like a bulk then cut back to back. It can be done, but it's not realistic for most people. Why add all the weight you can, just to cut right after and end up losing the majority of it. Then you get in a pattern of going up and down in weight.

You should bs able to add size, do everything you can to maintain as much as possible, then after you adjust to being at the new weight for a while, you can work on a recomp to cut the BF.

Tren is great but it's not for everyone and you should have a good amount of experience before using it. Most people don't gain a lot of weight on it, but they do recomp very well. J would work on diet before taking that route. Diet is the only way to gain or get cut but it sounds like you are losing all your size when you try to cut. If you lose 30-40lbs to get BF down at your size, then your diet needs work.