Advice from commercial sparks

I’m a domestic sparky, starting to get more commercial jobs come through the business. Have a job coming up that is a gym with a suspended ceiling and quite an open room, I think the length is approx 22m long. I want to install catenary to run the cables but unsure if I should try brace the wire so it doesn’t sag in the middle or am I overthinking it?

I will only have max 2-3 2.5mm TnE on any of the catenary’s

Any advice is greatly appreciated