re paper sizes: see the pdf that comes with the rip re the borders - basically
your
document size must be smaller than your page setup size by the amount of those
borders
- selectable in PAGE setup> manage custom sizes> printer margins - the quad
whatever
will be selectable and will tell you the border sizes

any time your doc size approaches page setup size it does that "print half A4"
thing
just give it some space

You can't print edge to edge..

Also re resolution: you just have to print on the highest one
it is slow