How do i keep Satisfaction and Filing Rate in my City without going broke?

[wilmer0072000 0]

My city has hit 300k population and i was managing around $50k-$75k income at one point. Then my Home Filing Rate fell under 50% so i started putting in Health and Education which dropped my income to around $50k while making my zones all green. Now i started adding in security and now i'm losing $4.4k income. I don't have a problem losing money now because i have $168 million in the bank but this is my concern so i don't end up going bankrupt sooner or later.

 

 

 

 

 

What am i suppose to do to keep their satisfaction high enough so that the filing rate goes up without breaking the bank.

 

 

 

 

 

If it helps i only have Unskilled and Skilled in my city as i haven't added Executives and Elites yet until i get the map filled with Unskilled and Skilled Class. All my zoning up to this point has been Low Density for everything and some Medium Density Retail. This way i keep the Executives and Elites out of town until i'm ready to add them into my city.

 

 

 

 

 

For roads i have all Small Roads in Residential and Heavy Industry and some Roads for Offices and Manufactures.