Yes you can freeze.
Yes you can make in 2 round cake tins or loaf tins.
I usually dust with icing sugar but occasionally I make a creamy cream cheese topping.
Creamy cream cheese topping is about 100 grams of cream cheese mixed with about 200g of whipping cream a touch of lemon juice and a little icing sugar if you need the sweetness. This can be piped on top or as a dollop on the side. Also great with many other cakes and brownies. No real recipe I make it up as I go along.