Yes, it did tile across the screen correctly at a larger resolution.
I'm thinking though that if I only enlarge the height, the honeycombs will be stretched tall and will look funny. Even if they don't, they won't resemble honeycombs and that's part of my theme.
I guess you're saying that an image of that size will be too big a file size?
My photo editing software will allow me to optimize an image for the web. I can have the image come in with different passes. On the first pass, the basic image is drawn but is very fuzzy. On the second pass, more detail is added. Passes continue until the entire image is loaded to is normal clarity. I suppose this still isn't the optimal way to handle this situation. I don't want my customers to have to wait on some huge file to load. Maybe I can get the resolution up there where I want it and get the file size down.