I went through a similar situation, I started building a SaaS product and I only know limited codes.

My advice is focus on what you're good at. Unless what you're trying to build is simple, your time is better off spent building the other aspects than trying to learn to code. I started trying to code myself. But I finally realized that the amount of time it takes for me to write code, I could have made more money, hired a programmer and still have leftover cash and time. Unless you are looking for the learning process then its different.

Even though, I'd advise against writing code, do consider understanding how your programming logic works and what are the milestones. Otherwise you'll have difficulties communicating with developer or managing the process.

Feel free to call me for more details

Jennifer Ping
Founder of Pixall.net