/jp/ - Otaku Culture

>Round starts
>Hand begins with a good set of Sou's and a completed 456 man sequence
>Get a pair of Ton's and pon the next discard
>Hand is now 44566788 of the Sou suit along with the 456 man suit
>Just want to win, so I don't mind a cheap hand
>Have to decided which sou to discard, do I want a 5, 8 or 4, 7 wait
>Go for the 4, 7
>Game goes on
>Draw the fucking 5 sou, discard it as it wouldn't help my hand
>Got another ton next draw, kan it and dead wall draw a fucking 8 sou
>Next round deal into Kamicha and my Kan gave him Dora too

What is the best choice for discard in pic related? This was the final part where it didn't work out for me, but before the 8 sou I discarded my hand was 44566788. Was it just a gamble on which sou tiles to discard and I got it wrong, or could I have worked out that 5,8 was better than 4,7?