On startup, do not immediately advance to 1000 RPM (unless the manufacturer expressly advises against this, the C404 Titan should not idle below 1000 if it can be avoided, for example) Idling at 1000 will sandpaper your prop/s most effectively whilst you sort yourself out in the cockpit before finally taxiing off.
Running on one mag at idle (and leaned out) is a good way to knock off some engine RPM when operating on sand, gravel, loose chips, etc, too. I'll do the mag checks on the downwind to avoid needing to do them on the ground and just do idle mag checks on the ground while taxiing.