To quench or no quench

For a build this mild....... the current x heads would be fine imo.

“IF”....... you were starting from scratch........ you could have used pistons that would have given you zero deck without having to machine them.
If you didn’t have heads, you could use aftermarket closed chamber heads, and end up with a nice tight quench combo.

IMO, that would be a somewhat better combo than what you’ll have with your current short block and X heads.
But...... not better enough to start over.

It doesn’t appear there are specific enough goals and requirements for the build to warrant making wholesale changes.

Pull it apart, make sure everything is good to go, have the heads bowl blended(or not), put it all back together ...... and let ‘Er rip.