The state is willing to work with you if your plan makes sense and is the best for the situation. When we replaced our system, several years before a remodel, seven wavers were required to get something useful and yet environmentally safe. We had to move a culvert away from the field and use double wall pipe from the tank to the field because it went under a seasonal stream. The local septic designers can help you figure out what is best.
In the end, you want to make sure the tank doesn't leak and the field leaches slowly, even in heavy rain. The downside to not doing it right is more aquatic plants and eventually more muck along your shoreline.
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