It's entirely plausible but it's completely dependent on your commute city pair, the frequency of Delta flights, and your base and equipment. The commuter policy requires the second flight to be Delta or Delta Connection.

My experience with sitting LC at home was very positive. I have 11 mainline flights a day and about 95% of the time I'd get trips a full 24 hours before report time. Only once in 9 months of reserve did I get a 12 hour call out. You can use Yellow slips to help control your life and commute. They don't always work but you will have the ability to at least make the LC from home work.

In all honesty, if this is your first 121 gig and since you'll be on probation for a while, I wouldn't take any big risks until you get comfortable with the commute and the reserve process.