The K260AS CP is for 58 watts at 65 meters, a little over 12 miles from the KEPH site. However there is a null towards KEPH as well as the yet-unnamed LPFM CP in northeast Harris County. It is also about 40 miles from KTTF, so probably not going to be a problem for the Tomball station.
But yes, the FM band is getting very crowded in Houston. And more LPFMs and translators on the way.