Convert FAS2552 from 7 Mode 8.2.5 to Clutser Mode 9.5

We Are Planning to Convert FAS2552 version 8.2.5  7-Mode to Cluster Mode 9.5.  we got the license from NetApp.

need to set the setenv options

LOADER-A> set-defaults
LOADER-A> setenv bootarg.init.boot_clustered true

which option we need to perform this

Option1 :we need to Netboot with 9.5 and install new os 9.5  and Initialize all disks . perform cluster setup

Option2: Boot menu, Option7 install new OS and Initialize all disks . perform cluster setup

my question is do we need to Netboot or selct option 7 directly and install 9.5

Thanks

Karthik KP