Strength goals for unnatural lifitng?

Hi, I have been training for a few years and over the pats year I've started taking anavar test and recently primo. I saw my bench go from 130kg to 170kg. I haven't really trained deadlift much and the best I've done is 210kg but this was before i started any peds. What would be a good goal for me to work towards for deadlift 250? 280? maybe 300? I dont want to easy of a goal because I know I will move on to somethign else once ive done it. I'm 6'1 about 95kg pretty lean but basically no leg or back development tbh