For those of you that have built a thinline kit, do you reckon there is enough wood at the back top edge (behind the f hole) to get a comfort contour in there without ending up with a hole?

The square edge on the back of a standard tele body is about the only thing I think Leo got wrong.
Being that he was a notorious cheap-skate, I understand the "time is money" thing, but just how much time & money are we talking about here?

Thanks in advance.

- Mick