Yep there is. Id say about 4-5 months wait as you may have gathered from the other posts re the same. There are about 120 FO's plus any captains that are still waiting. Its an obvious mess up somewhere along the line as it's in nobodys interest not to be flying.
Now that deliverys have resumed and when the dublin pilots are trained up on the 800 it should alleviate the problem. As regards pay for cadets the only thing ive seen in black and white is you'll be paid from base check but that may have changed since but ask on the day.
the short of it is dont quit your day job just yet. if you've can manage it (financially) go do it. If not wait 3,6,12 months 5 years they will still be hiring then! Its bloody hard work but great fun.