Just get PRETTY×CATION ずっと初恋の日々エディション (released February 2018), it includes all the appends already.
I don't remember if it includes birthdays though, if not I can upload them somewhere.
Not that I know of. According to VNDB there's a patch in progress for Lovely x Cation 2 but I know nothing about its current progress.
The Japanese in these games is usually relatively simple though, and for Pretty x Cation 1&2 especially, the writing is very straightforward (to a fault...). Machine translations should be able to do a decent job if you're willing to give it a try.
A given mission, mechanical assault, manufactured devotion.
Red eyes, an upside-down form. Even the twisted shape was made to be that way.
No matter how cruel the slaughter, worse than a demon's,
or how gentle the kindness, greater than an angel's,
a machine has neither will nor madness—only code, and a few bugs.
So why, then, does it feel so unbearably sad?