Advice: SQL Server Versions & Other Services ?

Hello Forum,

I do need to setup SQL Server 2014 SP1 for my SharePoint farm..

My two questions are as follows:

1) Is SQL Server 2014 SP1 really stable and reliable? Or, Shall I go with SQL Server 2012 SP2?

2) Assuming that I would want to install and configure: PowerPivot, Reporting Services (SSRS), Analysis Services (SSAS), and Integration Services (SSIS) ALL of them onto one single box (One server) along with the SQL Server itself - Do these 4 components require lots of resources (RAM & CPU)?

Thank you so much & I hope to hear from you soon !