Chuck,
I measure basement gave me 12 ft and from and my room from where the opening to the window gave me 13ft and up stairs gave me 13 ft so it a load Bearing wall right

That it is. U need a header to support the ceiling beams. Put up temporary wall until after header is installed.

Header should be double 2 x 10 supported by 2 jack studs on each side. Make header 7'' longer than opening.

The jack studs can be put inside existing wall and made flush to wall for closets.

Good luck

Chuck