Diffuse Front Wall? Absorb rear wall?

It depends on what kind of speaker you have. For dipole or bipole, I would do what you suggest. For others, I would do the opposite.

Diffuse the rear, absorb the front, as a general rule. Windows should always be absorbed.

LEDE rooms are the other way around. Even in relation with room acoustics, most folks here will opine that anything goes so long as you enjoy the sound and are "emotionally involved".

LEDE rooms are a bit passé as computer programs are now used to make a finer analysis of each room.

The front is a matter of taste but a live front end is often more pleasant sounding or lively. Generally it is best to absorb on the rear wall behind the listener...if you sit with your head near this wall then you need diffusion behind you for sure.( normally you should sit 38% of room length and at least 3 or 4 feet from a wall.... 8 feet or more is much better)

LEDE was out of the recording industry in the 60s. It was for control rooms, not listening rooms. Go to this page. Click on the article "on the soundstage" by Chris Huston on the right hand side. This will give some insight into the differences of a control room and listening room. For those that don't know, Chris Huston has over 40 years experience as a recording engineer, producer, studio and media room designer. He has over 80 gold and platinum records to his credit. He is an amazing source of information--and a great person too.