Your cash flow will be better, but LG is downscale but too remote to be gentrified. El Cajon has a better location on the 8 if you want to go downscale rental. (El Cajon also has wealthy areas.)
Someone I know who lived in LG did not like it, and said they we’re moving to next door Spring Valley as soon as they saved up enough for a down payment. While SV and LG kind of blur together for most San Diego residents, they said SV was far nicer.
Despite these issues, if you see what looks like a great opportunity and have a chance to vet it, I’d say go for it.