Mango variety and plants for 1acre land

Hi friends…
I am planning to plant Mangoes trees for 1acre of my land with drip irrigation…
I am thinking of varities Alphonso or Malgova/Malgoba…
Which variety would you recommend?
How many plants can i plant in an acre?
Where can i get Rathnagiri Alphonso plants near Kunigal?
Where can i get good Malgoba/Malgova plants??
Would appreciate any info…

Regards
Sundeep