Tips for drilling s13 dash for gauges.

[e30gangsta]

hey guys I am planning to install a set of defi gauges that I bought from camryonbronze into my Silvia's dash. And I am curious if anyone has any tips on how to get a clean cut. I plan to use painters tape to cover the holes, then draw on it to align my holes, drill a pilot hole. Then use the hole saw in reverse at first. (Someone online said that's a good way to start cutting into the hole?)

Below is the look I am going for, if you guys have any other tips or tricks to pull this off I would greatly appreciate it. I just don't want to ruin/destroy my mint rhd dash. thanks.

thanks!