That is the fairest way to do it. Shooting 1st relay is usually a huge advantage because they get to shoot the best conditions of the match. They also get a good no wind zero most of the time and that is huge.One club, we draw chips for relay and then draw chips for benches. We rotate 4 benches after every relay. The other club I shoot at, the MD draws relay and bench ahead of time. Both seem to work.
^^^^^^^^It creates disgruntle shooters and that causes people to quit coming.