No. It may help in the short run, but the only time I move dirt is if the plot is really rough. The plots on my new place were low and grazed by cattle, so I had a mine field of ruts from hooves. I flattened it once with a rented skid steer and pulled a drag over. Never moved dirt since.
If you get rain, there's not much you can't do in a throw and mow situation. To get bigger things to go, you'll need to manage for straw and learn to produce it and effectively kill it and spread it out to do what you want to do. I like the concept of mow killing cereals, simply because I'm too lazy to spray, and I don't like handling chemicals.
For what you want to grow, I'd maybe skip the peas, and focus on a getting a straw crop growing first. I'm partial to barley simply because it grows and bolts quickly and can be mow killed by end of June in my area (zone 3). You may want to get a longer season oat, planted a little later as well, so that you can throw and mow your WW/clover/chicory around September 1st.
If you want to do large seeded things in spring or early summer the following year, I'd skip the wheat in the fall and go with winter rye and about 20% late maturity oats. That rye straw will be ready to mow kill by June 1st and you can throw and mow whatever you want into it.