
Hmmm... looks good but WWYD? and WHY?

Who is G Uzaku?
Mahjong books author. And he is also works for other Mahjong tactics books as Proofreading.
He prefer play real mahjong rather than internet Mahjong games.
『麻雀 傑作「何切る」300 選』
300 Selected WWYD (Blue)

『麻雀定石「何切る」301選』
Mahjong established tactic 301 selected WWYD (RED)

New One!!!
『ウザク式麻雀学習 牌効率』
Uzaku Style MJ Studies "Tile Efficiency"
(GREEN)
Picked Tile efficiency related subjects from Blue and Red version and adding more.
Highly recommended for players who just started and not winning hands often.
G Uzaku also running his blog
(Slashing MJ Books! Slashing MJ games!)
Twitter: @mjbook
Not sure... A part of me wants to discard 3/4p because double ryanmen like this isn't as good as it seems... 6s also looks tempting! It does lose 36 (only 1x6s left, though) ukeire but we're keeping 58s and it seems like a good compromise between a normal hand and Chiitoi. I'll go with 6s.
Depend on the actual stage... Since the table matter is not given, I will assume all the waiting tiles are available. In this case, I will discard 3P/4P since 3344 have duplicated waits (well, if looking for 1 pair of identical sequences, 6M/8M is the choice)