Two hands Late in a 1 dollar tournament

[Larude]

First hand, two tables left:

Prima Poker skin
No Limit Holdem Ring game
Blinds: $600/$1200
6 players
Converter

Stack sizes:
UTG: $4896.80
UTG+1: $14916.95
CO: $12043.00
Button: $12981.25
Hero: $19283.76
BB: $15964.04

Pre-flop: (6 players) Hero is SB with 3[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/club.gif[/img]
4 folds, Hero calls, BB checks.

Flop: 4[img]/images/graemlins/heart.gif[/img] 3[img]/images/graemlins/spade.gif[/img] 3[img]/images/graemlins/diamond.gif[/img] ($2400, 2 players)
Hero checks, BB checks.

Turn: 7[img]/images/graemlins/heart.gif[/img] ($2400, 2 players)
<font color="#cc0000">Hero bets $1800</font>, <font color="#cc0000">BB raises to $3600</font>, Hero calls.

River: 2[img]/images/graemlins/heart.gif[/img] ($9600, 2 players)
Hero checks, <font color="#cc0000">BB is all-in $12364.04</font>, Hero calls.

What is the BB's range here when he goes allin and raised the flop with (assume no complete bluffs please)??? And would you played the hand different somewhere?

Prima Poker skin FINAL TABLE
No Limit Holdem Ring game
Blinds: $1000/$2000
7 players
Converter

Stack sizes:
UTG: $20443.00
UTG+1: $30518.18
Hero: $59347.80
CO: $7994.80
Button: $16945.18
SB: $13171.04
BB: $6080.00

Pre-flop: (7 players) Hero is MP1 with 8[img]/images/graemlins/spade.gif[/img] 8[img]/images/graemlins/heart.gif[/img]
UTG folds, <font color="#cc0000">UTG+1 raises all-in $30518.18</font>, Hero folds...

I folded because the tournament payoutstructure is very heavily skewed to the top 4 places and didn't wanna risk my chiplead against that guy on what probably is a 50/50 on average; 99/TT 77/66 might also be his range I guess. What do you guys think???