So say somebody sends only evidence since becoming LPR (instructions tell since date of marriage). Say only quarterly statements are sent to save space. Say the evidence is for the last 7 quarters (because filing 90 days early)
Joint checking = 2 pages per statement, 7 quarters => 14 pages
Joint savings (same as above) => 14 pages
Lease (very short one, haven't moved at all) => 3 pages
Photos (3 per page, 7-8 in total) => 3 pages
Gas / electric bill, 2 pages per statement, 7 quarters => 14 pages
Internet / Phone / Other utility, 2 pages per statement, 7 quarters => 14 pages
GC copy => 1 page
IRS tax return transcript => 4-8 pages (1 vs 2 years)
Trip reservations, 2 pages per trip, 2 trips a year => 6 pages
I-751 form itself => 11 pages
This thin packet would be consisting of just 73 pages of evidence and 11 pages of form itself, 84 in total.
I haven't included 2-3 affidavits, page each, car insurance / ownership, club memberships, retirement plans listing spouse, stocks, any medical stuff, birth certificates of kids (if any) in this calculation. I was very conservative with pages per statement. Most of my banks send 4-7 page statements.
AFAIK it's not advisable sending partial statements with missing pages, as this can lead to RFE.
I cannot wrap my head around how a modest packet can be less than 80+ pages. IMHO it must be lacking evidence?