The marshmellow is not necessary, unless you just prefer that taste in your gooey's. I would add Bavarian Cream and Cotton Candy. Those two will both round out the others and sweeten to taste. I use the following:
10% Cinnamon Danish
6% Bavarian Cream, and
10% Cotton Candy
Delicious, not too much cinnamon, which is easy to overdo. Sweet and creamy. Wonderful. Been on my ADV list for 18 months. This is a favorite of many on my family/friend list. Good luck!
Looks good. How long do you steep this?