$Freeroll NLHE MTT: should i go all in?

PokerStars - $0+$0|40/80 NL - Holdem - 9 players
Hand converted by PokerTracker 4

UTG: 29.38 BB (VPIP: 0.00, PFR: 0.00, 3Bet Preflop: 0.00, hands: 24)
UTG+1: 30.25 BB (VPIP: 0.00, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 24)
MP: 27.93 BB (VPIP: 21.05, PFR: 15.79, 3Bet Preflop: 0.00, Hands: 39)
MP+1: 33.64 BB (VPIP: 13.04, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 24)
MP+2: 26.75 BB (VPIP: 22.73, PFR: 13.64, 3Bet Preflop: 0.00, Hands: 24)
CO: 33.3 BB (VPIP: 14.29, PFR: 10.00, 3Bet Preflop: 0.00, Hands: 86)
BTN: 30.11 BB (VPIP: 13.04, PFR: 11.19, 3Bet Preflop: 3.17, Hands: 139)
SB: 40.53 BB (VPIP: 25.95, PFR: 18.46, 3Bet Preflop: 0.00, Hands: 132)
Hero (BB): 29.38 BB

SB posts SB 0.5 BB, Hero posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has 8<font color='red'>♦</font> 6<font color='red'>♦</font>

fold, fold, fold, fold, fold, fold, fold, SB raises to 2.5 BB, Hero calls 1.5 BB

Flop: (5 BB, 2 players) T<font color='red'>♦</font> 7<font color='black'>♣</font> 4<font color='red'>♦</font>
SB bets 4 BB, Hero calls 4 BB

Turn: (13 BB, 2 players) 6<font color='red'>♥</font>
SB bets 13 BB

or should i call

Raise to 12bb on the flop and stack off.

Really interesting spot when he pots the turn. We have no fold equity on a shove and our opponent always has top pair+ or a strong draw here. Shoving and flatting are both fine.

Perfect spot for check - raise here, You have so many outs. The opponent can't continue his bluff because you block all his bluffs , you have two diamonds and the cards to complete his straight draw. If he played a Tx there that way or even an overpair I'm fine with the flip if he shoves to me.

I would prefer raising more than calling on the flop with such a big draw. On the turn if you call you don't have much left and if you shove you have no fold equity but I would still prefer shoving.

I am agreed with Gabinho12345, i would raise (or even shove) at flop too. With double belly buster + flush draw you have even more percents than AA there to win. (56% to 44%) Against hand like T9s you got 52%, so why not to shove, especially if it's Turbo MTT and you have not much time for moves, till blinds will eat your stack out. Another point is that if you do such move, you will gain fold equity and put your opponent into hard times figuring out if his hand really that good.
But you called it at flop and put yourself at hard situation on turn, where none of your outs came out. Now you have only 45% against top pair or premium pair like AA or KK for example. The problem is that pot chances are only 1 to 2 now (or you need at least 50%, to have 0EV call). And thats not really enough, except he shots second barrel with air, which i would really doubt about at micro limits. I wouldn't shove there. The board seems to be too thin for you at turn and opponent showed so much of strength already. I would tend to fold there more, or maybe call if you have reads on him, that he could cold stone bluffing like that. Although i don't really like call there to be honest, cause when you call and not hit your stack will be just 9BB and bring you to push or fold state. If you would fold it on turn, you still keep a healthy stack of a bit less than 23BB about.

Raise on the flop. You've got great cards for a shove on the flop. You percentage is 50+. Don't forget that this is a freeroll and your opponent could be with a high cards ace with such a low cards board.