Thanks Mike for the detailed installation / configuration steps, it was very helpful.!

Issues faced during the install -

(1) 'No available web app...' message when adding new Reporting Services Service Application, but solved following @ecassaro's comment (thanks ecassaro.!).

(2) I was not able to access the Ppvt site's PowerPivot Gallery from Excel when I tried save to sharepoint - Ppvt1 excel, working locally on the sharepoint server,  but I was able to access the same from a client outside of Sharepoint server.