Planting in pasture

I been thinking about planting into a pasture without any burn down just no- till it in. I going to plant this field in spring and fall for next 3 years to build up soil. Plus I am going to graze the cover crops I used a 16 seed mix. Anyone ever try this and have any tips?
Thank you for any help.

Where are you?
What's growing there now?
What are you planning to plant?

Are you only planting a cover crop?

Do you plan to only build the soil or are there future plans for growing annual vegetables?

Are you trying to create a Silvopasture?

Yes a planting zone would help folks.

I am curious as to what your 16 seed cover crop contains.

Sorry I did not put enough information on my post.
Included Species: Millet, Braco Mustard, Abyssinian Cabbage, Cowpeas, Sunn Hemp,
Forage Sorghum, Flax-seed, Spring Pea, Black Oat, Sunflower, Phacelia, Berseem
Clover, Persian Clover, Lifago Buckwheat, T-raptor Rape, Nitro Radish.  
I live in Southern Indiana I believe the zone is  USDA Hardiness Zone 7a.
This fall I am going to plant to blend for next spring to graze and then replant a summer cover crop to graze.  
Then after doing this for 3 years I put it back into pasture.
Thank you

Okay. Next question, why don't you graze the current pasture? What's growing there now? Most pasture plants are pretty good for building soil.

I do pasture it right now. But most my grass is tall fescue or tall fescue with red clover. So since it is mainly a cool season field get low in the summer and if it dry it just get worst. So I thought I would try to build up the soil and and have a more to graze in the summer.
Thanks

Why not plant some native grasses?

These are suggested in my grass catalog:

Big Bluestem, Little Bluestem, and Switchgrass.

These sound like excellent choices and these grasses are warm-season grasses so they thrive in warmer climates.

After the cover crop I am planning on planting blue stems and switchgrass in the pasture mix.