The kickstart 2.0 rom can be found with a very simple google search. Here's a link for you but remember that this rom is not legal, so if you get problems with it, you'll have to find another buy Cloanto's Amiga Forever suite.
http://amiga.supergamez.hu/Util/kick20.zip
Now, as for Gobliiins 2 - like with most games not archived on the excellent Back to the roots website, it can be downloaded from planetemu.net, a French language site which has practically every Amiga game and add-on ever released. Here's the link to the page for their "G" games
http://www.planetemu.net/index.php?section=roms&dat=257&page=g
Scroll down to Gobliiins 2 (Disk 1 of 3) and click "Telecharger" (French for "download"). Repeat for disks 2 and 3.
Good luck!
HTH
Bill