+01 mm or +20 mm Offset for a 20x9 Wheel on a 285/65r20 tire
 

I have a 2010 4x4 Platinum. Currently at stock height and has stock rims. I will be purchasing new 20x9 rims (stock ones are 20x8.5), and will also be buying 285/65r20 nitto terra grappler g2s. I just ordered a 2.5" front level with a 1.5" rear block. My question is on the offset for this specific set up I got going here. I want the tire to stick out on the sides an inch at most. I also do not want to have to deal with any modifications like trimming or anything. Which would work better for me, the +20 mm offset or +01 mm offset? It would be great if anyone with these tires or similar ones could share some pictures and advice along with their offsets!

+01. You still may rub.. you are going to stack rear blocks ?