how to use this word "so"

[tessandre]

Please check my sentence. Thank you

Please finish your bank reconciliations so I can do the cash report before the 17th of October.

Thank you for your cooperation.

[Bridget]

It's Fine.

[Marius Hancu]

I'd prefer the more formal:

Please finish your bank reconciliations so that I/we can do the cash report before the 17th of October.

Please finish your bank reconciliations in order for me/us to be able to do the cash report before the 17th of October.

[Bridget]

I'd prefer the more formal:

In which context?