With proper care the three included heads should easily last 2 months. There are youtube videos for cleaning and dry burning the coil to prolong optimal life and performance. If you determine you don't care for the taste from the Vivi Nova, videos are also available describing methods for recoiling and rewicking using silica,stainless steel mesh, bamboo or cotton for wicking material and Kanthal wire (in various gauges depending on desired resistance) or nichrome wire to make the coil.( Very easy to do with a little practice and correct materials)
The Vivi Nova comes with three heads . One rated 1.8 ohms, one rated 2.4 ohms and finally one rated 2.8 ohms.
To get the most performance from all three heads out of the box, I would suggest ordering two variable voltage batteries . The eGo Twist or Vision Spinner will do quite nicely. If not available in kit form,you will also need a compatible charger.
It is a good idea to order with your Vivi Nova a spare tank made of metal. Though you cannot see the juice level with the metal tank,it will allow you to vape liquids known to deteriorate plastic tanks such as cinnamon,banana and lemon ,etc.
Be sure to order from a Vision authorized dealer to ensure you receive an authentic Vivi Nova as knockoffs/counterfeits are rampant in the ecig business . Some vapers, though not all , have had performance issues with knockoff Vivis. Note: Not all knockoffs of ecig products are necessarily poor quality but very few authentic VN owners are dissatisfied.
ETA: Don't forget to purchase liquid as stated in a previous post. If ordering the eGo Twist or Vision Spinner batteries, consider the Vivi Nova mini as it will look better on those than the larger 3.5 mil regular Vivi Nova