The X heads from Hughes are certainly capable of doing the job here.

However..........

They are heavier than stock heads, have pretty short springs, and if you're buying "prepped" assembled heads from Hughes, are likely about the same price as RPM heads, which are way lighter, and have a taller spring height(so there are more spring options available, should you need something stiffer than the supplied springs down the road).

It's just personal preference.
The X heads are plenty good to get you to your goals.