Screen sizing

Linux Mint Cinnamon

The auto Hi-DPI isn't much help (possibly due to screen dimensions not being set in Xorg).
Menu; Preferences; General; User Interface Scaling: Double.
Fonts; Text Scaling Factor - I use 0.8

Linux Mint Xfce

Settings; Setting Manager; Appearance; Fonts; DPI - I use 165
I resize the panel. Right click on blank panel area.. Panel. Row Size.
I also add "User" to a bottom panel, to allow Log Out etc. to be seen.

Linux Mint MATE

Go to Control Center, Desktop Settings, Windows, User Interface Scaling and change to Double (HiDPI) It's a bit awkward for some windows, where the lower section can be obscured by the toolbar/taskbar. I'm sure it can be tweaked but I haven't looked into it (yet).

Lubuntu LXQt

Open a terminal
sudo echo "Xft.dpi: 192" > ~/.Xresources
Logout out and back in to activate.
Could do with a system-wide option and I might try a higher DPI, say 200.
The Toolbar/panel remains small but it's easy enough to resize the icons to about 45px

Intel Management

You may notice the dmesg log filling with errors from this service. Turn it off.
Edit /etc/modprobe.d/blacklist.conf and add to the bottom..

# Intel Management
blacklist mei
blacklist mei_me
blacklist mei_txe

Disable hibernation and hybrid sleep

Open a terminal.

 sudo systemctl mask hibernate.target hybrid-sleep.target
 sudo systemctl restart systemd-logind.service

(The system now appears to wake from suspend/sleep, though it does take quite some time: expect 15-20 seconds wait.)

Free some space

Reduce the amount of system reserved storage, I suggest leaving 2% rather than the default of 5%.
If you've installed to the 4th partition, then..

sudo tune2fs -m 2 /dev/mmcblk1p4