i base the call on the way you have been catching cards on the table, true you have a flush draw and a outside str8 draw, but the tight guy you speak more than likely have trips and the brd can pair then he has a boat, its a 50-50 decision on your part, but if this call will put you all in and tilt you i would not recommend the call..that just my advice..if you running good though, call especially if it only half or less then your bankroll..go for it