Please request that these batches be cut in half and only do one page as they have over 1000 entries and hard to do in one week.
I understand your concern on short time and long batch. When you open this batch you receive an alert message :
Before you start this project, please note that there may be 10-600 names per image. It may take more than an hour to index a batch. You have 7 days to complete the batch. You can close the batch at any time and we will save your work. If you cannot finish in 7 days, we will save your work and give the batch to a new indexer to continue. So if you do not finish it somebody else will help you to finish it.
You can also post your request as a suggestion in the category of IDEAS for Indexing .
The batches I have say you have up to 10 days to complete the batch. Maybe it needs to be 14 days. It isn't fair for someone to do 800 names and not get credit for anything when it expires.