I feel that the best place to get answers about SFI is the Forum. Your sponsor and co-sponsor is not a bad place too. But since they are only one person, you will receive only one opinion to your question.
Since a lot of people participate in the Forum and our SFI family is a helpful family, you will get a lot of answers and opinions to your question. Some may be relevant to you and your country, some may not. It is up to you to sieve through the information.
