Weddingbee boards

I need help figuring out what to send for Christmas.

Option 1:  Flat 5 x 7 card - 1 photo.  Front has picture, back has wording and space I can write a personal note

Option 2:  Folded 5 x 7 card.  Outside will have 1 photo, inside will have 3 small photos, back will have 1 photo.  Lots of room for personal note inside the card.

With the flat card - it's a tiny bit cheaper.  I don't really like the idea of only having the back to write on - and I typically don't like receiving flat cards because they are hard to display.

With the folded card - I like the idea of a folded card, although, with the 3 pictures on the inside, I'm wondering if it's picture overkill (since it's just me and DH).  I guess picture overkill is really my main reason for shying away from this option.  The 3 on the inside are on the flap - so they aren't very big (one is of us dipping/kissing, one is of us sitting, and the other is of us kind if dancing/kissing). -The one on the back will be of our shoes.  All are pretty artsy (taken by a professional photographer friend).

The price for the flat is slightly less - not enough for price to be a consideration.

So - please, weight in!  Should I do the flat and one picture?  Or go for photo overkill???