Depemding on the size, it may be better to keep the stitche. The lace repeat is 7 stitiches so your extra 28 stitches would be four repeats, you could add one repeat to each front section and the sleeves.
I am on the second half of the last sleeve of my FLS (can't wait to finish it so I can start Sylvi!!). Here is a little hint that may not be original but it helped me tremendously. When you start the gull lace panel place a marker every 3 repeats. I was having trouble stayin "on pattern" but the markers helped me to know immediately if I had made an error and where. I placed my every 3 repeats on the body and every two on the sleeve and when I did the purl row (knit on the sleeve because it's in the round) I counted the stitches and made sure I had enough.
If the stitches were wrong I generally found it was because I had missed a YO and it was easy to slip it on as you were doing the purl (knit row).