Without GApps, you won't get Google functionalities like play store, calendar etc. You have to install gapps as these ROMs don't contain them. Although there are many options. In your case, download the pico version which has play store, calender and a couple of important Google services.Useful info. Going to install on my i9082
One question: Does GApps really need to be installed? I just use Youtube and Play Store. I don't need the other crap stuff on my storage.
I tried a custom GApps on my actual OS but always had errors (Gmail stop working, Voice stop working, etc) and I installed the standard package and it's ok but I don't use many of them.