I've finished a trestle dining room table for my daughter. It is 36x84. The table is white oak with mahogany accents. I have decided...pardon me, it has been decided for me that there needs to be two accompanying benches for this table. I will profile the seat for comfort, but how deep front to back should a seat bench for a table be? Also, should it be tipped forward or back for comfort. I have ordered some 7/4 mahogany for the bench seat. There will be no back on this so it is a true bench. Outside to outside the trestles are 63". Overall length will likely be around 70". Much obliged for any suggestions.