Tex I wouldn't make any excuses about the size increase, etc. When you're supposed to have the information, you're supposed to have it
BUT instead, I'd call your examiner (should be a number on the request) and let them know you need some additional time. Typically they give you 60 days notice on this stuff. Preface it in such a way that you want to gather the data in a complete package, blah blah, and ask for an extension of a few weeks. I would be pretty suprised if they didn't allow this.
What this then means for you is you are now a full time employee. By full time I mean not 9 to 6, but danged near 24 hours a day if you haven't gotten your ducks in a row for this exam.
If they're preforming a review on multiple years, which include census data from 1990 and 2000 be sure to ask which they will be relying on so you can get a general performance context in place. This requires multiple charts in the back of the exam, and if you're as unlucky as me, basically two complete exam preps (one for each period). One week isn't enough to be ready, and any realistic examiner won't ask that of you.
If they really won't work with you, you can call their omnibudsman, but I'd suggest that be a last, if ever, resort. You don't want to start with an examiner who's miffed at you.
I've answered all of this as if this is your CRA exam. Is it a full blown exam, or a data integrity review? Even for a data integrity review they'll give you more than 4 days to get the information to them. If this is the case, tell them you need to get your data integrity procedures in order, scanned, etc., so you can provide them with the package. Again, they'll most likely work with you. It's the rare examiner who won't
no really...I mean that.