First of all, how you build models is up to you. It is so suppost to be fun, so you decide how and what you do.
Second, it would not look too bad with your method of rigging. Sure, it looks more fancy with turnbuckles and all, but in fact when you look at the pictures of most planes, then you see that most buckles where very slim indeed and hard to see, very much so from even a slight distance.
I myself have noticed that the preferred method of eyelets, turnbuckles and loops looks great, but also way out of scale in some respects. The ones I have seen with the polyamide tubing looks the best, as it it the slimmest option. I use the brass tube method myself because I like the way you can tension the wires, but that is my choise.
So no, it would not be a bad option to drill trough and rig your wires that way, you can simulate turnbuckles with paint if you want.
best of luck and most of all, have fun!
Hidde van der Donk from Holland