[Closed] Bet sizing two pair on flop

Hand converted with online PokerStrategy.com hand converter:

Play hand

$60/$120 No-Limit Hold'em (7 handed)

Known players:
[tg]SB$1520.00:///////;BB (Hero)$1280.00:///////;MP1$2985.00:///////;MP2$2845.00:///////;MP3$2955.00:///////;CO$955.00:///////;BU$960.00:///////;[/tg]

Preflop: Hero is BB with 7:s, T:s.
MP1 folds, MP2 calls $120.00, 2 folds, BU calls $120.00, SB calls $60.00, Hero checks.

Flop: ($480) T:c, 7:c, 4:s (4 players)
SB checks, Hero bets $280.00, MP2 folds, BU calls $280.00, SB folds.

Turn: ($1040) 7:d (2 players)
Hero bets $240.00, BU calls $240.00.

River: ($1520) 6:s (2 players)
Hero bets $320.00, BU calls $320.00(All-In).

Final Pot: $2160.
Results follow:

Hero shows a full-house, sevens full of tens(7:s T:s).
BU shows two pairs, sevens and fours(4:c K:h).

Hero wins with a full-house, sevens full of tens(7:s T:s).

I wasn't sure how much to bet here on each street to protect/get value.