1985 Piece of cake.
I know exactly where I was in 1985 so:
With my present memory, knowledge, and skill set, I would know how, where, maybe even why, I traveled back to 1985. With that knowledge I would;
go to my home,
knock on the door,
announce to myself who I am,
offer evidence only I could corroborate,
tell myself the situation that resulted in my being in 1985,
and allow my past self to decide if I want to avoid the situation or make the trip and allow him/me go on with life with no further interference from me.
Then, since I am stuck in 1985, why not make the best of the situation.
My parents and grandparents are still alive so I would definitely want to see them again. Since I am close to the age my father was then, now, I would be able to go with him again as he is just retiring and his retirement was traveling and camping and fishing in a circuit that brought him around to visit his children and other retired friends over the course of the year.
Imagine, father and son, retired and fishing together whenever we want.
Funny, with this I remembered, our last family reunion was 1987.
As for money, no problem, ask myself for a short loan, buy and sell a few stocks, easy money. I'd ask myself if I wanted some financial advice, but if I know me, and I do, I'd say "No thanks. I got this." I've never wanted a bunch of money. It's more trouble than it's worth.