Using a 450 dozer for pulling a disc harrow?

Hello, I have a project coming up. About 6+ acres I need to smooth out and plant pasture mix for horses. Right now it's over grown field and super rough, been brush hogging it down but it's slow due to how bouncy and rough the ground is trying to mow. I have a 6' disc harrow dual row, but it's a little big for the tractor I have. I also have my 450e Deere dozer 75hp, I thought I could use if I got a pull type disc? Anyone have an idea what size I could pull with it?

I'm planning on mowing it down, spraying the weeds what I can, then disc and disc and disc some more to smooth it all out, plant seed and grass and will be easier to mow.

8' 10'? Dual row?

Would have to be a pull type, and I have no aux hydraulics on the dozer either.

Thanks.

Using a 450 dozer for pulling a disc harrow?