Family reunion visa for spouse

Hi, I am an Indian and have been working in Belgium for 3 years, I need to apply for a dependent visa for my spouse, I am following the procedure on Vfsglobal but i have a few queries.

1. What is the processing time of the visa?
2. What are the legalized documents required, we have the PCC, BirthC, and MarriageC legalized -- do we also need to legalize the degree certificate.
3. Is it possible to bring her on tourist visa and initiate the long term visa from Belgium.

All these questions are answered in existing threads in the forum. Please take time to read through.