Hello Sir, I am Working with 3 Tier Data Center Organization as a Windows Expert, I have more than 5 years experience over windows servers, working on more than 1000 of Windows Servers..
I have completely go through your requirement and assuring you that software will do your task 100%.
If you would like to take backup via power shell scripts then we can customize that for you also, this will take more cost and time.
I will provide you best software for your requirement. Please give an opportunity.