I have been looking at the exam 70-452 and realise that this will probably be easier than 70-448 but i have not found any upgrade paths to SQL Server 2012 like there are if managing the 70-448. The 70-448 will give me a MCTS but the other one nothing. Together though they will produce a MCITP which have a different upgrade path. It´s a hard choice which i will have to come back to later, because i also realise that the 70-448 is a big one and i will probably not have time to practice the SSIS part this spring. Maybe good knowledge on SSAS and great on SSRS can suffice.