Better to be incorporated or sole proprietorship? Canadian working mostly in USA

I am a software consultant and I am incorporated, Ontario Canada. Just me as an employee.

I live in Ottawa Canada but travel to the USA from Monday to Thursdays .

80% Revenue when I am in the USA and about 20% revenue working from home in Canada or other Canadian clients/customers.

I am over the 180 day rule in the USA.

Based on my situation , is there a a benefit to be still incorporated or should I go sole proprietorship?

I have to do 4 sets of taxes, 1 USA personal, 1 Can personal, 1 USA Foreign Corp, 1 Can Corp.

Any help would be appreciated