LED build design phase questions/suggestions

[Daytripr69]

Digikey has them listed as active. Let me see if I’m right here i was looking at 560mm strips. They have a listed max amperage of 1.4A and a voltage of 19.5V that would make them 27.3W each correct? Would a higher voltage be better? Also looking at some 1120mm that are the same amperage but run at 39v. Uggg this is harder than I thought lol