Assuming that you are using a recent version of KSM, there should be a "Configure" selection on KSM's main menu. Selecting that and then "[general]" then "add item", should give you a list that includes "ksmAutoselectafter=20" and a "ksmAutoselectoption=start_koreader".
I haven't experienced a loss of dictionaries after suspend, you might check the
"issues" for the project at Github.
With KSM7 the "front light on" option is at the top of the screen. Doesn't the Glo have a button, like on the Aura HD, to toggle the frontlight? (Not sure about the Glo HD, but you have "Device: Kobo Glo")
You can Wirelessly add files within KOReader, but not with the USB cable. The KSM USB works well, for me.
Battery duration is a tangle of user expectations, hardware/battery chemistry, questionable monitoring circuits, and actual performance. I just charge it whenever I notice it around 60%, that is at least five or six days, most likely a week between charging.
Luck;
Ken