"File size needs to be less than 5,000,000 bytes. Does anyone else have this problem?"
Well, yes, Everyone has the problem. Using 5Mb images where 100kb images are just fine consumes Huge amounts of disk space, and storage is $$$. Also, a small image will load faster, making the entire experience much more enjoyable. Jay's images are around 100kb, as are the two you posted.
Re-size them to 72 dpi, (or something like 500x400) which is sufficient for a monitor.