Need advice on a rake

I am looking for advice on which type of rake;

We are a smaller operation, cut and bale mixed grass hay on 200 acres or less once a year (climate allows only one cut)

The ground is a bit sloped and hilly in places, some flat lands, nothing too extreme.

We have been using a Fella rotary rake for 12 years and like it, but want something to cover more ground per pass.

A twin rotor rotary would work but is out of our price range.

Looking at purchasing a carted 8 wheel Vee rake, but am concerned it might not work well on the ups and downs of our hilly/sloped areas.

Any opinions?

Thanks.

Need advice on a rake