$Freeroll NLHE MTT: Questionable pre-flop action?

[TheArnie]

pokerstars Hand #144364880896: Tournament #1361006913, Freeroll Hold'em No Limit - Level X (200/400) - 2015/11/25 18:26:42 EET [2015/11/25 11:26:42 ET]
Table '1361006913 21' 9-max Seat #1 is the button
Seat 1: 3,14jama (33906 in chips)
Seat 2: TheArnijs (5313 in chips)
Seat 3: gerayadrin (17198 in chips)
Seat 4: 123miha321 (21564 in chips)
Seat 5: leonid4873 (19445 in chips)
Seat 6: Vanya384 (3087 in chips)
Seat 7: Svito2013 (9273 in chips)
Seat 8: StellaArtem (3202 in chips)
Seat 9: a.d.274 (15510 in chips)
3,14jama: posts the ante 50
TheArnijs: posts the ante 50
gerayadrin: posts the ante 50
123miha321: posts the ante 50
leonid4873: posts the ante 50
Vanya384: posts the ante 50
Svito2013: posts the ante 50
StellaArtem: posts the ante 50
a.d.274: posts the ante 50
TheArnijs: posts small blind 200
gerayadrin: posts big blind 400
*** HOLE CARDS ***
Dealt to TheArnijs [9c Tc]
123miha321: calls 400
leonid4873: calls 400
Vanya384: folds
Svito2013: calls 400
StellaArtem: folds
a.d.274: calls 400
3,14jama: calls 400
TheArnijs: calls 200
gerayadrin: checks
*** FLOP *** [4c Ac 2d]
TheArnijs: bets 4863 and is all-in
gerayadrin: folds
123miha321: folds
leonid4873: calls 4863
Svito2013: folds
a.d.274: folds
3,14jama: folds
*** TURN *** [4c Ac 2d] [Js]
*** RIVER *** [4c Ac 2d Js] [6h]
*** SHOW DOWN ***
TheArnijs: shows [9c Tc] (high card Ace)
leonid4873: shows [Jc 8c] (a pair of Jacks)
leonid4873 collected 12976 from pot
TheArnijs finished the tournament in 557th place
*** SUMMARY ***
Total pot 12976 | Rake 0
Board [4c Ac 2d Js 6h]
Seat 1: 3,14jama (button) folded on the Flop
Seat 2: TheArnijs (small blind) showed [9c Tc] and lost with high card Ace
Seat 3: gerayadrin (big blind) folded on the Flop
Seat 4: 123miha321 folded on the Flop
Seat 5: leonid4873 showed [Jc 8c] and won (12976) with a pair of Jacks
Seat 6: Vanya384 folded before Flop (didn't bet)
Seat 7: Svito2013 folded on the Flop
Seat 8: StellaArtem folded before Flop (didn't bet)
Seat 9: a.d.274 folded on the Flop

Could this have been played out better?
1. I flatted just because there were so many limpers and I was on sb. Was it a mistake to flat from sb, considering I'd be OOP against so many limpers.
2. I jammed because I had flush draw and backdoor straight draw and there was already like 100% of my stack in pot. I estimated my odds at 40%. Unfortunately, it actually was like 20%. Should I have expected this, considering big amount of limpers?

 

[horizon12]

Preflop just shove it, a lot of dead chips in the pot. I think it's fine but the limp is not fine. If you get only top pair or draws, it will be very difficult to play without OOP in this multiway-pot.

 

[TheArnie]

Preflop just shove it, a lot of dead chips in the pot. I think it's fine but the limp is not fine. If you get only top pair or draws, it will be very difficult to play without OOP in this multiway-pot.

I limped because there were like 6 people limping before me, and considering my stack size, I was almost sure I'd get atleast one caller. That's why I wanted to see flop, if I don't get draws I fold and my stack is still basically is intact, but if I do, I shove. I seriously doubt pre-shove could have been best action pre-flop.

To put it simple, wasn't stop n go, which I attempted, a better option?
(not taking criticism in ass, just trying to discuss)

 

[Alexandru24]

played it fine, the pot was already huge, you are short nothing to do, great spot.
Shoving pre was also fine because you always can win right there and if you get called you are not dominated with all that limping. If kq calls you you're still in great shape.

 

[Lucothefish]

Shove pre for sure, unless somone is limping with 99+ you have decent equity even if called and you'll often take the pot right there

 

[WiZZiM]

this is a great "safe" hand to shove in preflop to collect dead money. If you get called you are almost always live with a hand that runs extrememly well in showdowns.

 

[joe777]

Either shove or fold pre.