@frontier: You're the one who decides if programing from Univision, Telefutura, Telemundo or MeTV is worth 'going after'. KUVS caries the first two. KCSO carries (or will 'soon') the last two.
I agree with TG that reliable reception of KCSO (real channel 3) will be difficult, that success would require use of the largest available consumer grade antenna designed for low-VHF reception. KCSO is also on a lone azimuth, not so far to be trouble for sure, but a reason to think you would need a two antenna system - possibly.
I'm reluctant to suggest the HBU-22, I would rather you get just a little more antenna than needed, The Winegard HD7694P and Antennacraft HBU-44 are very similar in gain. Both would offer solid reception of your existing lineup with enough received power to split to a few sets.
If money is tight, a low-band VHF could be added at a later date. You may also want to explore higher mounting elevations with the
Interactive TV Maps tool. You may or may not see improvements in signal levels.