HisperiaDude,
I could recommend an antenna, however if you have very poor access to signal it wouldn't really matter. To even try for L.A. signals you are into the extreme measures category. This means you are into situations like this:

VHF stacking:
These are multiple antennas stacked (working together) to create enough gain to overcome the extremely weak signal condition and get it up to decodable levels. Could you do this? Sure. Would it work for the Mt. Wilson signals? For the VHFs maybe, the UHFs likely not. You'll notice once you get out of the VHF signals from Mt. Wilson the L.A. UHF signals have co-channel interference. This means even if you could get the signals to decodable levels the interference from another channel on the same frequency could prevent reception negating the whole effort.
Stacking antennas isn't cheap either. Think about the price of 4 Antennas Direct 91XGs. $65 X 4. Two VHF stacked beams wouldn't be as pricey, but then there's spacing and technological understanding that has to be followed.
You *might* if stacking VHF beams be able to get ABC, FOX and KCOP from L.A. Anything else forget it. The VHFs would be the domain of a Antennacraft Y10713. In this situation, you'd have the Clearstream pointed at the local translators for UHF and the stacked Y10713's would handle VHF and be pointed at Mt. Wilson.
Unfortunately you live in an area that still operates some analog translator equipment with limited options or expensive and more work intensive options for some limited L.A. signals.
Cheers.