try on both dahlbello and fult tilt and see what fits best.
i realy wanted full tilt konflicts when i tryed them on they were to narrow and hurt my 6th toe.
i tryed krypton pro and they fit my foot perfect, had them 3 seasons now and they are goin strong.
heaps of custom options to get the flex exactly how you want em. 100 to 140 flex
try boots on and get what suits your foot.
I dont think 175 for a 6 foot tall dude is being big.
but yea I wouldnt go lower then the 6 tongue featured on the high five.
I rode these for a while (the 6 flex tongue) being 155 and tought they were a tad too soft comming from customised race boots. but I never bottomed them or any trouble.
End of story: go witrh the medium (high five hotdogger) or the firm flex(konflict).