Yeah, sorry. 6-OXO might not be the best choice. I just thought I'd read reports from some older users benefiting from it. You should browse the 35+ forum as well to see what people your age are doing. I think Activate Xtreme (TexasLifter89 gave some good suggestions as well) would be a great natty test booster to take, but I wouldn't stress about it too much in the beginning. You did say you've been out of the game for about 4 years, didn't you? A multi (ZMK/MVP is great), protein, creatine & fish oil sounds good.
And don't forget - lots and lots of quality food. That's your most important supplement right there. Good luck.