So, my partner's daughter has asked me if I would like to make her wedding cake as she likes my cakes! It's for probably about a 100 guests and she would like sponge tiers, just plain icing as she is going to drape it in flowers. I would love to do this for her and am ok with baking, but have a few questions which I hope you might be able to help me with.
How do you size up ingredients and cooking times for larger tins?
Can you make the sponges in advance and freeze them?
Will the upper tiers sit ok on sponge cakes with ready to roll icing?
Which is easier to ice ( will prob use ready to roll royal) square or round?
The wedding isn't for ages so I have plenty of time to practice, want to get it right as I'm touched she has asked me.
Thanks in advance for any hints and tips!
Opinions on this crossword, please

