Normally the complexity of the case doesn't cause significantly different waiting times, although some judges do prefer particular types of cases...
The 'ready to list' status means that the Tribunals Service have received the appeal, and it is in a queue waiting for the next available date suitable to your needs etc.
Although you were given a waiting time, I think this was probably just an approximate guide to indicate that it will take around that time - but another email just to check where they're up to with it won't harm at all, so if this would put your mind at rest then definitely email them.
Excellent news Kevin! Really pleased for you!
@kevin888 - the end date issue should not cause further delay, but as CR states it can take 5-8 weeks to pay a claim.
I would keep on at them - when you call up ask to speak to a Manager and advise the delay is causing you financial hardship - unless there is a question mark over them appealing the decision, there is no reason they can't sort the payments out.