No, good marriages take effort. But they shouldn't be hard work. My marriage is so easy. We are just compatible and perfect for each other. Truly the easiest part of my life.
But we put effort into it--being kind and grateful, communicating and not holding grudges, check-in periodically to make sure each one is still happy. But monthly therapy sessions, ugh. That tells me your marriage is going to take too much work. When life throws you a curve ball, you won't be able to work through it together because you are spending too much effort just keeping an even keel.
Your relationship needs to be able to handle 6mos-1year of benign neglect (due to outside stressors) and still be smooth sailing.