hole card is always 10

1) if hole card is always 10, u always play basic stgy.
what is player's EV.
6d, S17, E10, DA2, DAS.
2) the adv of re-double/ double 1 unit again after DD, same rule as above,
what is the adv???
total is 3 units= initial bet 1 unit +1 +1 units
3) what is EV of Ace as 1st card, 6d,S17, DA2, RSA--4 hands.