If you’re seeing .580 at the valve, with the lash set to zero, then the effective ratio is only 1.38.
I doubt there would be a “ton” of power left on the table leaving them in place, but I think all things considered for your combo, having the net ratio closer to a true 1.50 should be worth “something”.
Whether that’s 5hp or 15hp, there’s only one way to know.

At this point, you have to decide if you’re willing to spend the money for different rockers or not.
If your heads have the TF SR spring package, and you’re going to try different rockers, I’d step up to the HS 1.6’s.

If you’re looking for an option that’s friendlier on the wallet, buy 8 Hughes 1.6’s and put them on the intakes.

You can always start with what you have and change them down the road too.