1. 20 foot
2. yes self pollination
3. maybe link answer this Question I'm guessing about 5 years to good harvest.

In link there several links that maybe of interest.

Here is a link that might be useful: Olive in Georgia

Big thanks, gator! So, you mean to say, for sure, that say, 10 trees cloned from thas same mother tree can pollenate "each other" to produce fruit? For any olive variety? If so, Im in heaven!!!

(I underastand some olives are "self" pollenating but the classic european ones are not- in fact, do better (produce say, bigger crop) when intermixed in the orchard among different varieties..........)

There will be three types of olives grown, the Arbequina, Arbosana, and Koroneiki, which are pollinators.
I have wipe egg off my face on number 2 I read in my search that no pollinator needed. I'm new to Olives well sprang some interest in 2005 in north east Texas it was to cold there few plants that planted died.

No need to worry, gator- we're all learning. I actually have Italian varieties (Noccelara Messinese and Siracusana), along with 1 arbequina. Lots of studying to do. I am an olive freak. Wishing to lerarn more. May request a good book from library- good way to indulge, eh?

Thnanks!!