Which 24V IP67 power supply for LED 528 COB 15W/mb 4+5+4m instead of Mean Well 200W? 300Watt, but wh

I have led lighting to install in the garden. I have purchased a 528 COB led which means I am assuming 15W per mb. It has turned out in the meantime that the 200 Watt trasformer from MEANWELL that I purchased will unfortunately not handle this for me (4+5+4 m sections). What trans power supply should I buy for this? What do you recommend 300 watt 24v for such a length? Ip67...

I intend to keep the power supplies in airtight boxes outside under a 5cm layer of soil.

Do you recommend anything?

How about the Mean Well HLG-320H-24? It should do the job.