I would not recommend scanning of 35mm film as a way of producing present day digital images but it works quite well for old pictures taken in the pre-digital days. The results are certainly nothing like as good as you get from a present day digital camera but for old slides / negatives acceptance on A.Net is usually achievable provided the original film shot was in focus and reasonably well exposed.
I have been using an EPSON Perfection 3200 flat-bed scanner which has a max optical resolution of 3200 ppi. This has given perfectly acceptable results when scanning 35mm negatives at a resolution of 2900 ppi. Using 2900 gives a slightly faster scan and also seems to pick up a bit less grain in some cases.
After scanning I crop, correct exposure, remove any color cast, sharpen, repair (scratches and dust marks) and resize to 1024 wide using PS
elements. If the shot is particularly grainy I will run it through Neat Image to reduce the grain but the result sometimes looks rather unnatural.
This link will let you see a scan from a 35mm neg which was originally shot on a horrible wet day back in 1988 which I processed as described above.
The EPSON 3590 should be better than the old 3200 I am using so I would expect you would be able to get fairly good results from it.
Hope this is of some help.
One thorn of experience is worth a whole wilderness of warning.