I would go withI would go with -for the First Test -
Jayasuriya
Tharanga
Vandort
Sangakkara
Mahela
Atapattu
Chamara Silva
Vaas
Malinga
Dilhara
Murali
The only question mark is whether Jayasuriya should open the batting or come down the order. If SL are put in to bat first, Sangakkara and Tharanga would be my choice as openers. Otherwise even Tharanga and Vandort opening together is not too bad.
If Tharanga doesn't get some runs in the opening practice match, I would not be surprised if he gets overlooked for TT Sam. Which would mean Jayasuriya and Vandort opening and TT Sam coming at 7.
Attapatu
Vandort
Sangakara
Jawardena
Samaraweera
Silva
Jayasuriya
Vass
Malinga
Fernando
Murali
Lets hope for the sake of Sri Lanka being competitve they dont choose Prassana or Mubarak. Tharanga is below Vandort in class IMO.
Regards to Marvan what a mess i agree completly he should be there but he hasnt played any cricket, nor has he been in a good mood. Lets hope he is fully focused. We need him.