Is the late 2015 iMac still worth it in 2021

Im starting to get more into apple and want to start editing videos and producing music. With using apple’s software like final cut pro and Logic pro, Is a late 2015 imac 27 5k still a good purchase.
My company gives us “at cost” discounts on our in house products. Recently we got a trade in for a Late2015, 27inch 5k retina, 3.2 Quad i5, 1TB Fusion. 8GB Memory iMac. 
My cost to purchase since I work for the company would be $600. Is that a steal? Also how would the longevity be? I was also going to upgrade it by putting in 16Gb of more Ram and eventually putting a full SSD in it, instead of the fusion.
Let me know what you think!