$0200-$02ff and $0334-$0400 will be counted as used memory if not restored.
You seem to be in desperate search for a few bytes of RAM, aren't you?
if we designate $0334 to $1333 as our 4k, we can use $0002-$01ff and $0300-$1333, as well as $fffc-$ffff and all of IO (I'm including $00-$01 in the latter).
That's a luxurious 4658 bytes of RAM
Hmm, but the only difference to the conventional $0801-$1801 setup is that the $34 bytes block at $0300 merges with the 4K block at $0334, no? :)
I feel like I've opened Pandora's box. ;-)
If I use $4000-$7fff as my 16kb, I can still add a BASIC-starter to the PRG-file, without having the $0801-$08xx count as used RAM, right?