Hello Bogy! One one of the first apps I downloaded was a Bible app. Most of the free versions are online using the app, but you can download a NKJV, for example, for offline reading through the app. Of course you can download and carry a whole bookshelf with you via iBooks or the Kindle app (or some other reading apps). I hope you love your iPad as much as I do mine.
I concur, you should get the WiFi only unless you need the GPS (and you don't need to buy a data plan for the GPS to work). I have the 64 3G model and I do like having the GPS and the option for cellular data, but if already have GPS and 3G in your phone, you really don't need it. It is a convenience.