Here is some advice I've given others to help them get started.
If you are a reader, I'd recommend this book by Cliff Jacobsen. It covers all of the bases in more detail than we can go into on a Reddit post. This will help you understand what you are getting into. Practice things like dispersed camping, treating water, cooking outdoors with limited, lightweight equipment before your trip.
Second, since your group is new to this I would highly recommend that you work with an outfitter. They can help you plan, help with permits, rent you canoes and other gear and they can steer you in the right direction. Research outfitters on line, pick one and call them. Tell them about your experience level, goals for your trip and let them guide you.
If I were to recommend a specific area and outfitter, I'd go with Sawbill. They are a top notch outfitter, located right at an entrance point and there are a number of entry points and routes that would be perfect for a group like yours.