I often do what you've done, but I tend to put the feed hole along the edge of the fuse lines.

e.g. on your plane at the junction of one of the vertical fuselage walls and the bottom wall.

Then I run it along the edge or in some cases along a trim line. That makes the antenna seem to disappear into the trim.

At other times I will put in a piece of tubing through the fuse as far back to the tail as I can. Epoxy the tube in place and feed the antenna through and out at the back.

If there is left over wire, that gets similiar treatment as before, brought along a seam or trim line.

As long as the antenna wire does not cross back over itself, there are no detrimental effects.