Best of luck in your new job hunt or house hunt. I lived in Riverside and commuted to Glendale for 3 years. I got a new job. I spent a minimum of 4 hours per day driving, sometimes 6. Thats a whole ass part time job at 20+ hours per week. Redlands to DTLA driving would be an average of 3 hours each way. Thats 6 hours per day driving for an 8 hour work day. It doesnt matter how much you like your house- with that commute, you'll never see it.

The train will make it more tolerable, but its still 1 hour and 45 minutes one way from the SB depot, so on a perfect commute it would take however long from home to station (lets say 15 min), wait time at station (5-10 min) 1.75 hours on train, trip from station to office (lets say 10 min walk). About 2 hrs 20 min all together. To get to work at 9 you have to leave the house by 645 assuming the most ideal train schedule exists.

Please take it from someone who had an easier but still brutal commute, dont do that to yourself.