Its good that you have given yourself some back off time, it should be enough (although that is a pretty individual thing). You have lots of time so you can really tweak things as you see fit. Twice a week bench is fine but I don't know if I would shoot for absolute strength on both days IOW triples, doubles and singles on both days.1 day for strength and the other for more accessory stuff like board presses, speed work and such = concurrent periodization ala Westside is really popular. Its really tough to say without seeing your whole program and even then I'm no expert on bench training but you'll definitely get some good feed back.