another wedding cake question please urgent advice?

[mothersmilk]

have just done a dry run of the 10" layer it supposed tp fill a 5" deep tin and has only just filled my 3"deep tin can i just double the quantities for the 5" ones i will be making the actual cakes in? its maderia by the way

No - divide by 3 and times by 5 just in case is too huge!

that sounds really complicated

Filled once cooked are raw? Be careful making it too deep as the outsidewill be overdone by the time the centre is cooked. Better to make 2 and stack them.

thats what i was thinking so just cook the amounts iv got in the 5" tins but do two cakes instead?