OK, thats right.
You can save 512KB extra if you leave Kick3.1 away.
What does SysInfo reports about the "Insider" ... memoryarea at $?

??.
Is it autoconfig?
Btw. did you noticed the nice Game-Mode?
(Kick1.3 reset + both mousebuttons = colorflash -> gamemode)
It disables everything ... all expansions and external drives.
Even on my rejuvenator (with ECS and 2mb chipmem) the result is a A1000 with only 512KB ChipMem, no FastMem, no Expansions (HDD) and only internal Drive df0:.
Its perfect for some old games, demos ... and after reset+right button you are back in 3.1 with all goodies.
Booting from df0,df1,df2,df3 is a Kick2.x,3.x feature.
If you like coding ... Twinkick supports 1MB kickfiles.
$200000 - $300000 ... this area must be checksumed and Twinkick pays attention to it.
(You lose 1MB FastMem instead of 512KB)
Did you noticed my email?