Which inseam should I pick, 38" or 40"?

The 38" is the more popular length and suits most women 6'2" to 6'6" wearing flats. The 40" adds length for taller frames or for wearing with heels.

Will the 38" work if I'm around 5'11" to 6'2"?

With 2 to 3 inch heels it should give a full-length look with a slight puddle at the hem. In flats it will likely run long.

Are these pants meant to be worn with heels?

They work with either, but the length you choose decides it. Taller shoppers can wear the 38" with flats; shorter tall shoppers will want heels to keep the hem off the floor.

What makes the Archive Pant different from a standard wide-leg trouser?

The extra-long inseams and double pleats. Standard wide-leg trousers usually stop at a regular length, so they break above the shoe on taller frames.

Is the wide leg and pleating too much for everyday wear?

The shape is deliberately full and tailored, so it reads dressier than a plain straight leg. It suits smart-casual and dressy outfits more than casual ones.