I'd use two antennas.
An Antennas Direct DB8E facing NE and an Antennacraft Y5713 pointed at real CH 10 (to the SE).
I'd try this with no preamp... You're right at the point where overload may be an issue on the stronger signals.
If the need is proven, a distribution amplifier such as the Channel Master CM-3410 can be added at a convenient point between the antennas and passive splitter.
You'll also need a UHF/VHF combiner. The Antennas Direct option includes a weather proof housing.
https://www.antennasdirect.com/store..._combiner.html