Hi
I would like to answer the last two questions you asked. However please note that this is contingent on using the standard approach for adding additional languages on your form as documented here
You will get all the data in one sheet and on the language you choose to use for download. If you select English and you collected your entire data in Arabic, you will still get the English equivalent of the data as long as it was not text entry. Text entry will come in the language it was typed (so you need some external translations).
Use of values as numbers is helpful since this aids the analysis. The value labels can be assigned based on the language you need for presentation.
Stephane
