go for yellow/amber. Irrespective of which you choose, you should carry out a test. A safelight is "safe" only for a certain time. It's a compromise - use dim lighting and bumble around knocking things over and losing stuff; OR use brighter light to see what you're doing, but maybe risk fogging your pix.
It's simple to do, use the same technique as when making test strips. With your safelight(s) on, place a strip of grade 1 paper partially covered on your masking board for 1 minute, move the cover a bit and leave for another minute, and so on until you are bored with it all (but be sure to have one end of the test strip that has not been exposed for any more than the time it took to take it out of the paper box. Develop, fix and wash, dry, then study it for faint signs of grey scale steps.
File this as a reference. Most safelights change as they age. Maybe do this every 6 months.
Have fun. Enjoy.
Just remembered.... white walls are the thing. If the safelight is safe, then the light reflecting off white walls is also safe. I once knew a photographer who painted his darkroom walls Black !