Canadian Corporation tax form for withholding

Just been down th rabbit hole and would appreciate advice from other Canadians who have done this, in the community.

I am a Canadian citizen, resident in Toronto, Canada. I own 100% of my business, which is registered in Ontario. All of my current income is derived from Canadian business.
I believe I can get relief from withholding tax by filling out the W-BEN-E. I have hit a few blocks along the way and have a few questions:

TIN: The Canadian TIN is in format of BN123456789 . I have therefore ticked TIN format not applicable. Is this correct?

GIIN: Should this be pending or inapplicable?

LOB: It looks like because I am operating as a foreign incorporated and owned business I should apply under "Base erosion Test", Is this correct?

Thanks,

P