I underestimated how many entries there were

Now I understand the problem with the file size.
Kinda defeats the purpose of trying for me if I can't open it with my PRS-T1.
For iPad, I'd reccomend an app like
Offline pages or something similar.
Then you can just download a page every now and then if you need it offline.
For iPhone there is also an
app from Stanford, but it requires an internet connection to browse.