Day 1 of EPT BARCELONA.

Due to the huge volume of runners I was on an alternate list for seating. When I got seated on alternate table we were @level BB100.

As the alternate tables were filling up we were 7 handed when the following hand took place.

Hero: Unknown to the table
Villain: Only reads :Middle aged Russian?? man(His friend came over and they had a chat and a laugh in Russian a few hands prior to this)

SB (300bb)
BB (300bb)
UTG (300bb)
MP (300bb)
HJ [HERO] (10c 10s) (300bb)
CO [Villain] (340bb)
BN (260bb)

Preflop:
Folds to HJ. Hero raises to 275. CO 3bets to 700, Folds to Hero, Hero calls.
Flop: [Qc 10h 5s] (1,550)
HERO : Checks
CO bets 750. HERO calls.
.
Turn: [Qc 10h 5s 7h] (3,150)
HERO : Checks
CO bets 2,225. HERO raises to 6,175, CO calls.

River: [Qc 10h 5s 7h 4c] (15,500)

HERO: Bets 8,400, CO raises All in

Preflop seems pretty standard here at this depth.

Thoughts on line & sizing street by street please guys.

My thoughts:
Flop: My continuing range will consist of KJsbdfd,AKsbdfd,KQs,AQ,Q10,55,1010,QQ. I will have a mixed strategy of check raise/check call on the flop here..the texture allows for me to flat more.

Turn: On the 7H turn which brings the flush draw. Villain bets 70% pot. At this point i am happy to assign villain a range of AKhh,KJhh,AQ,KK,AA,55,QQ. With the 7H turn i can check raise somewhat balanced as my range will primarily consist of 55,1010,KJhh,AKhh I will have also have Q10/QQ here on turn some but i will CR these combos more often on the flop

River: 4C
On the river i decided to bet rather than check call for a couple of reasons.
Due to the ratio of air combos:value combos in Villains range. Villain's air on river will consist of AJhh/AKhh/KJhh (3combos). When i check river all of these combos will bet. For value Villain has AQ/KK/AA/55/QQ (30 combos) of these 30 combos i can see villain check back 24 of these combos a large % of the time when checked to. I decided not to give villain the chance to check back and bet a little over half pot with the aim to get called by AQ,KK,AA,55.

Villains Jam:

I need to put in 14k to win 60k. Due to it being EPT BARCA Day1 level 2 Villain is so nutted here to the 3 combos of QQ however i just need him to have 1combo of a bluff too make this a tiny bit better than break even +ev call.
I have given him KJhh,AJhh,AKhh on the river all of which i am sure will bluff when checked to on river but as played given the circumstances (EPT BARCA 2nd level) i don't know if villain will go all in on the river with a bluff.

Thanks in advance guys