A lot of the times, before you even go into automation, you should run continuous tests to see what content / message has the most impact and on which channels. I've run thousands of tests on posts, blogs, distribution channels to get a better idea of my audience and then I create a customer journey that feeds into my marketing automation and then I measure the success of my marketing automation. Depending on the nature of your SaaS business, you could run several drip campaigns at a time. I would also look into Account Based marketing techniques. Shoot me a DM if you'd like to learn a few more techniques that have worked for me. Have you looked into Zappier / IFTTT to automate some things as well?