Is there any way to work out what numbers I should be aiming for for each exercise?

I’ve got a deadlift PR for 175kg (~385lbs), I think I could squat 150kg (330lbs), maybe more, as I did it years ago.

I’m worried about bench as I’m untested. I would need about 120kg (264lbs). I’ve been doing dumbbell bench for 4x12 @ 17.5kg (~38lbs). Today I alao did Incline Dumbbell bench for the same sets, reps and weight.

I’m 14kg (32lbs) off with those numbers, so I’ll probably tack it on the squat or redo the DL.

Does anyone have any advice?

Cheers!