Then providing you don't use too many sets it's a very good back routine!
Oh, and straps are not your enemy. You do deadlifts for your back, not your forearms, therefore if your grip sucks don't be afraid to use straps. If i never used straps my grip would give out before my back and would mean i'm not stimulating my back as much as a could/should be.
Unless you perform specific forearm work then deads without the use of straps are great for building them up and improving grip strength. A strong grip is the focal point of energy transfer in most exerises and without a strong grip you are selling yourself short.