The two stations, KFXK and KLTV will be challenges each in their own right.
Your TVFR suggests that there are two other stations on the same frequency, with KFXK, channel 31. KLTV is rather weak at your location.
I have to disagree with the U8000 solution because it's low front to back ratio will not work in your favor when trying to receive KFXK. The U8000 is designed to receive real channels 14 and higher, making it a poor choice for reception of a weak channel 7 (KLTV).
Because you have two or more sets, consider keeping the existing antenna. Add a separate antenna system cabled to each TV where an A/B switch would select between the original and new antenna systems. The new antenna system would be a UHF antenna with high front to back ratio and a high-VHF. I'm thinking Antennas Direct XG-91 pointing at 246° and a Winegard YA-1713 pointing at 271°. The output of the new antennas would be combined into a single coax using a
UVSJ. The output of the UVSJ would connect to the input of a Antennas Direct CPA-19 preamp if you are planning to run this antenna feed to more than one set. That would provide for two to four ports of splitter loss. Both of these are long antennas, with the performance needed to deal with a couple of challenging 'gets'.