Changing screen scale in LXDE
There is an option to set global scale in LXDE.
Edit (or create) .Xresources in your home folder and set the dpi
Xft.dpi: 150
For my Dell XPS I have set it to 200 and works reasonably well
1280x1024 and you need to scale down? My desktop screen is that resolution and I still use Dejavu Sans size 11/12! But I have bad sight.
There's no global "scaling" in LXDE; you change font size (in lxappearance), or icon size in the panel's size parameters (right click the panel and choose the panel parameter entry).