SSIS : Insert records into Parent Child table

Hello,

I am creating SSIS package where below mentioned is the scenario :

1. There is sourcefiles folder -- > Need to pick CSV files of yesterday's date for processing.
2. There are many validations which needs to be done.
3. Store all (valid + invalid) rows in SQL destination Parent table.
4. Store invalid rows in child table with Foreign ID of parent table.

There are around 30K to 40K rows in the CSV file.

I have created Script component to perform validations on each row. This is running very slow. Any solution to this ?

I have defined two outputs of this script task.

Also,

1. I am not getting an idea how to get Scope identity of Parent table inserted row ?
2. Which approach I should use to insert these rows --> Data flow, Execute SQL Task or in script component ? which one would be faster in this scenario ?
3. Can I use Bulk Insert ?

Can anyone please help me on this ?

Thank you, Mittal.