International and domestic Wire payments

We have a requirement to handle international and domestic wire payments. Please advise the possible options to achieve this.

1) Can we have a condition like below in the 'Advanced Validation Rules' under Manage Formats

("Document payer bank branch country" = Canada 'AND' "Document payee bank branch country" != Canada 'AND' 

"Document payer bank account IBAN" is not null )'OR'("Document payer bank branch country" != US 'OR' "Document payee bank branch country" = US)

If i include this what are the additional things to be take care

2) Can we have same .rtf template to handle both by including if...then condition? if not do we need separate .rtf template one for international and another for domestic wire payments