I prefer 24v as it can go farther, and is sometimes brighter. You're going to find real quick that you want more LED resolution than the 8-bit decoders can provide. The stepping at the low end is killer. A lot of decoders and LED tape are kind of cheap (because they are from Amazon), so you may want to get a couple extra to prepare for failures. You'll also want to find a way to disperse the heat of the LED Tape, that will kill your strips quick. Here's my go-to list of gear for this type of thing.

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Power supply
https://www.mouser.com/ProductDetail/709-HLG-600H-24A

16-bit Decoder
https://www.amazon.com/gp/product/B075FHJM35/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

LED Tape
https://www.amazon.com/gp/product/B01MYN0HUU/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Aluminum Enclosure
https://www.amazon.com/gp/product/B01DM7FZ70/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1