qwertyjjj

Firstly, I'm not even sure I should be using M anymore. 
Everytime I am in this tourney spot with an M of 10, I find it a difficult spot. Any raise where I am first in can be re-raised by a good opponent.
Does anyone have general strategies for this size stack? Any less say 7 and below, I am pushing all in but that seems too much with this stack.
Any re-raise over the top of me and it's difficult to play post flop oop.

PokerStars, $1.96 + $0.24 - [i][color=#1515FC]Hold'em No Limit[/color][/i] - 350/700 (85 ante) - 9 players
[url=https://upswingpoker.com/replayer/224bb3A54]Replay this hand on Upswing Poker[/url]

UTG: 53,673  (77 bb)
UTG+1: 12,687  (18 bb)
[b][color=#C4302B]MP (Hero): 17,786  (25 bb)[/color][/b]
[b][color=#C4302B]MP+1: 42,413  (61 bb)[/color][/b]
LP: 42,710  (61 bb)
CO: 35,676  (51 bb)
BU: 10,765  (15 bb)
SB: 39,275  (56 bb)
BB: 11,171  (16 bb)

[b]Pre-Flop:[/b] (1,815) Hero is MP with J[color=#000000]♠[/color] A[color=#000000]♠[/color]
[color=#666666][i]2 players fold[/i][/color], [b][color=#C51F1F]Hero raises to 2,100[/color][/b], [color=#C51F1F]MP+1 3-bets to 6,300[/color], [color=#666666][i]5 players fold[/i][/color]