1)What is the model of your case? I could tell you whether or not a cooler like the DRP4 would fit with the Trident Z without issue or not.
2)If you're that serious about wanting to overclock, then go the Intel route with a 9900K and a 360mm AIO.
Ryzen 3000 has no real OC headroom to speak of. The online guides with general/universal settings are invalid; people have actually managed to degrade and destroy their cpus following said guides:
View: https://www.reddit.com/r/Amd/comments/ejgc6p/1325v_is_not_safe_for_zen_2/?ref_source=embed&ref=share
No one really knows what settings are safe; they can vary heavily per cpu.
3)The best route to higher performance on Ryzen 3000 currently is good cooling - the chips are temperature sensitive, and memory frequency up to 3733mhz while tightening the timings - look up Ryzen Dram Calculator guides.
4)How much noise are you comfortable with? There are performance-oriented AIOs and silence-oriented ones.
The performance models are going to cool better than the quieter ones, but not significantly so, and not until the higher rpm ranges, where they are loud.
The silent models are going to cool better than the performance ones at lower rpms, but there's no extra performance to be had out of the box(weaker fans), and this hurts them in that the high end air coolers end up outperforming them while being quieter...
Well, this is comparing air coolers to 280mm or less AIOs. The current lineup of air coolers can't really touch the cooling capacity of 360mm AIOs.