My overall recommendation is you put a multimeter on your finished display using the supply you already bought, and see what kind of power it draws once you're done with your animations, and then determine what you need. I wouldn't be surprised at all if you could get by with this more standard format power supply: https://www.amazon.com/ALITOVE-Transformer-Converter-5-5x2-1mm-100V-240V/dp/B01LXN7MN3

I built one of these a little over a year ago and I would suggest a few changes.

Don't get the barrel power adapters. They're terrible when used with higher amperages. Mine got too hot to be able to touch and I ended up soldering the wires from the power supply direct to the led strip.

I would also suggest a more powerful power supply for the LEDs. My strip is also 60 LEDs per meter and it took 182 LEDs to go around the back of my tv. 182 x 60mA per led = just under 11 amps of power draw at full brightness. I personally bought the 15a power supply to have plenty of overhead.

ALITOVE 5V 15A AC to DC Power... https://www.amazon.com/dp/B01LXN7MN3?ref=ppx_pop_mob_ap_share

What sort of output amperage are you talkin? I use these for 5V: https://www.amazon.com/gp/product/B01LXN7MN3/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
They have 12V versions too. While they probably don't do 15A, I'm sure they'll do 8-10A reliably. I think someone did a test in one of the reviews somewhere. They include the adapter for bare wire too.