Are you doing intensive rotational grazing yet? If not, it's certainly a worthy goal. You'll certainly increase your cow-days/acre.
I'd recommend checking out the work that Regrarians is doing, if you haven't. Their platform, modeled largely after PA Yeomans scale of permanence, helps obtain a holistic and more productive design. You might find that you can design in such a way as to increase diversity into these other areas and still maintain your herd size.
Regenerative Agrarians on facebook is a good group that discusses this.