Is it safe for programming

Hi. My problem is:

I have a programmer that will do an auto update for my store from my wholesaler xml.

It will downloading the xml convert to csv and then update the cart Products .Categories…

I see all this problem in the 2.0.5 that people say…and i know there will be more updates…

My question is should i tell him to do this programming in this version 2.0.5 or wait for it to be stable enough

BY THE WAY any idea when?

Or just do it in 1.3.5. sp4.