Direct answer
Objectives follow journal display order. Some depend on your choices; follow the active objective in the game.
Result
Only once in his life had Geralt ever seen armor made from diagrams hailing from the School of the Manticore. What's more, said suit had been incomplete and, truth be told, the worse for wear. So when the opportunity arose to assemble Manticore gear, and at a grandmaster level to boot, the witcher did not hesitate a moment before setting off in search of what was required.
