Most any convective stove should be no problem at 4'. My BK has side shields, and anything a few inches away is barely warm. My Spectrum doesn't exactly have shields, but is similar by design, and I get the same results.
Really? The Spectrum isn't too hot on the side? That's excellent: my s.o. really likes the Spectrum's colour options, but I ruled it out thinking it would be too hot. I was aiming for the Neo, but the s.o. doesn't like it's shape. And the Blaze King is right out: matte black is apparently No Good. I pointed out that its shape is sleek and elegant, and the heating specs are the best I've seen, but that isn't getting me anywhere...
I think the Ashford was the first stove from BK that got some positive remarks regarding its looks here. Now BK only needs to offer the Chinook with some side panels in different colors (e. g. like the PE Neo).