Reception of WEUX calls for a highly directional, high gain UHF antenna. You certainly have a far better chance of reliable reception if you mount outside, clear of obstructions including vegetation and buildings.
I would use an Antennas Direct 91XG, DB8E or Winegard HD9095P. Precision tuned filters are needed when combining UHF antennas. As a result it's generally cost prohibitive for most consumers to combine two or more UHF antennas into a single coax. I would suggest using an A/B switch or accessory tuner.
http://forum.tvfool.com/showthread.php?t=2882. To do so calls for running new coax from the new antenna to each TV that will use the new antenna.
Equip the new antenna with an Antennas Direct CPA-19 preamp.
You're right, I would expect to see a total of three or four signals from the east.