$11: Bubble Play, AJs

Below are 3 consecutive hands on the bubble at an $11 SnG Tournament. daddy1222 was a weak player in this tournament, and I am making moves to push him out (the blinds start out at a third of his stack and move to more than 50% by the third hand).

I my final push was +EV, but the call by Elroy was atrocious. At best he knew it was a coin flip--and if he lost he would be line for 4th place. He had been playing pretty solid until that point.

My question is this. I had 3 pushable hands in a row on the bubble. I know when you push 3 times in a row, your itching to have a caller. Did I make the right play? Should I be more conservative here?

P.S. My table image was very tight. Very few played hands.

***** Hand History *****
Seat 8 is the button
Total number of players : 5
Seat 3: HERO (785)
Seat 5: ElroyCPwood (1550)
Seat 8: daddy1222 (345)
Seat 9: Crazyrooster (5110)
Seat 10: xxxmortenxxx (210)
Crazyrooster posts small blind (75)
xxxmortenxxx posts big blind (150)
** Dealing down cards **
Dealt to HERO [ Ad, Jd ]
HERO raises (785) to 785
HERO is all-In.
ElroyCPwood folds.
daddy1222 folds.
Crazyrooster folds.
xxxmortenxxx calls (60)
xxxmortenxxx is all-In.
Creating Main Pot with $495 with xxxmortenxxx
Creating Side Pot 1 with $575 with HERO
** Dealing Flop ** : [ 8d, 9s, 7d ]
** Dealing Turn ** : [ 3c ]
** Dealing River ** : [ As ]


***** Hand History *****
xxxmortenxxx finished in fifth place.

Seat 9 is the button
Total number of players : 4
Seat 3: HERO (1070)
Seat 5: ElroyCPwood (1550)
Seat 8: daddy1222 (345)
Seat 9: Crazyrooster (5035)
HERO posts big blind (150)
** Dealing down cards **
Dealt to HERO [ Kh, Ac ]
ElroyCPwood calls (150)
daddy1222 folds.
Crazyrooster folds.
HERO raises (920) to 1070
HERO is all-In.
ElroyCPwood folds.
Creating Main Pot with $1220 with HERO

***** Hand History *****
Seat 3 is the button
Total number of players : 4
Seat 3: HERO (1220)
Seat 5: ElroyCPwood (1400)
Seat 8: daddy1222 (345)
Seat 9: Crazyrooster (5035)
ElroyCPwood posts small blind (75)
daddy1222 posts big blind (150)
** Dealing down cards **
Dealt to HERO [ As, Js ]
Crazyrooster folds.
HERO raises (1220) to 1220
HERO is all-In.
ElroyCPwood raises (1325) to 1400
ElroyCPwood is all-In.
daddy1222 folds.
Creating Main Pot with $2590 with HERO
Creating Side Pot 1 with $180 with ElroyCPwood
** Dealing Flop ** : [ 2c, 4d, 5h ]
** Dealing Turn ** : [ 6s ]
** Dealing River ** : [ 3d ]

The straight on the board was beaten by his 77. daddy1222 limps into 3rd.