File Size Relief

My files were coming back from PS in the 50 - 100 MB range(TIFF, Compressed). I found that if I change the file size to 1280 x 850 pixels, instead of 3872 x 2592, the file sizes are in the 6 - 12 MB range, depending on the adjustments made.
My workflow is to sharpen and make other adjustments in PS, and then send the photos to my web site. I accept the substantial reduction in tonal range on my web site jpg photos, however, I enjoy viewing my PS adjusted photos in LR.
If I ever get into printing, I will start the adjustment process over using my original DNG file and optimize for printing. I certainly will never print all of my thousands of pictures. In the mean time, I can enjoy high-fidelity viewing, since I can hardly tell the difference between the full-size and the reduced-size photos. Further, I can greatly reduce my storage requirements and increase LR performance.
If you try this, I suggest comparing different sizes and resampling methods. I like 1280 x 850, Bicubic Sharper which come back from PS looking sharper than my DNGs with no tone or color problems.
What do you think about this? Am I missing something?
Thanks

Fred,
Between Jeff Schewe and Scott Kelby, I am led to believe that ALL photos need sharpening in PS. They seem to consider LR sharpening inadequate.
I am certainly not going to sharpen everything in PS, however, in my short amateur career in photography, I have noticed some areas that definitely need PS sharpening. For example, close-up pictures of people focused on their eyes, are dramatically improved by using a layer mask in PS and sharpening the eyes, eyebrows, hair and jewelery.
At this point, I know enough to know that my ability to evaluate photos for tone and sharpness is erratic, at best. In spite of this, I am reasonably sure that I see a substantial loss in tonal range, especially in the shadows, when I convert my RAW files to jpg. I will have to check into this further. Beside my possibly wayward observation, I am led to believe from my reading that jpg compresses tonal range.
Thank you.

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