Yes, I'd also go with plugging and re-drilling the neck.
Have you had one of the Warmoth radius necks on a guitar before? I've got an all-Warmoth parts Tele with the compound radius neck and it doesn't do anything for me. I can't even get a particularly low action on it. I do seem to like my necks with a bit of radius on the fretboard.
Yes, my spalted maple parts Tele has a Warmoth compound radius neck and 59 roundback profile. Right now it's actually my favorite guitar to play. I'm not sure how much the radius factors into that, but I don't have any complaints with it.