Ya, please take my advise in S.B., Have you looked in Grand Terrace, thats about 8 miles away from S.B. How many miles are you willing to comute? i can name some places that might work for your buget. I grew up In Diamond Bar, im 40 years old so ive seen alot and lived in various places. I'll shoot you my cell number via PM. Dont hesitate to call. As for the trails, there are plenty of trails in the Inland Empire.
Sean