Here's an incredibly easy, quick, and cheap way to re-size your photos (they are so big I didn't even bother looking, to be honest, until I saved one and then resized it)
You'll be using software that is often completely overlooked on any Windows based PC- "Paint". And it's already installed on your PC
Go to the photo you want.
click on the icon
Select "open with....Paint"
Once the photo is opened in paint:
You'll see a list of headers across the top of the window. One will be "Image". Click it
Select "Resize/Skew". On older WIN installs it may be "Stretch/Skew"
You will see an option window open
Change the X and Y feilds of your image. This will change the percentage of the photo size for the X and Y directions. You'll want to change them both equally
for 99.9999% of anything you do.
Save the resized photo with a new name
I reduced one of your photos to 45%, with this result:
Hope this helps,