Q: MacBookAir 11inch Late 2010 2GB ram 10.6.8 upgrade to 10.10? - will it run with good performance ? or better no upgrade

Hi

I've got an MacbookAir 11inch Late 2010

Modellname: MacBook Air

  Modell-Identifizierung: MacBookAir3,1

  Prozessortyp: Intel Core 2 Duo

  Prozessorgeschwindigkeit: 1,4 GHz

  Anzahl der Prozessoren: 1

  Gesamtanzahl der Kerne: 2

  L2-Cache: 3 MB

  Speicher: 2 GB

  Busgeschwindigkeit: 800 MHz

  Boot-ROM-Version: MBA31.0061.B01

  SMC-Version (System): 1.67f10

RAM : 2GB 1067 MHz DDR3

HDD: APPLE SSD TS064C 60GB

and I got the OSX  Mac OS X 10.6.8 (10K549)

                           Kernel-Version: Darwin 10.8.0

Should I upgrade to OSX 10.10 ? I'm concernd about the RAM and that I get a to slow performance !

Upgrade RAM ? Possible ?