Optimise or Replace - Spray gun

I'm an amateur painter, certainly no pro. Painted a couple of cars in the past but increasingly trying to get more specific and technical always wanting to make it better. I only have one "good" spray gun, a Devilbiss Pro Lite and it has a TE20 air cap, 1.3 paint nozzle. I've used this for everything from primers to topcoats.

My current situation is should I buy different air caps for basecoat and for clear for the Pro Lite or should I buy a different gun? In saying that what would be the ideal air caps for the Pro Lite. I've heard people say a TE10 for basecoat and a T110 for clear ?

I plan on spraying PPG Deltron solid color red basecoat (no metallic or pearls) and plan to finish off with a PPG clearcoat and I'm not sure which one yet.

I would be spraying inside my shed, so no spray booth and no baking, Typical spraying temperature would be around 26'C (around 80'F).

Any feedback on guns/gun setup or clearcoat/reducers ?

Happy to provide any other details if it helps.........

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Optimise or Replace - Spray gun