Rough low in multi-way pot

[Boolean]

My first hand post for Stud 8/better. In this hand, it's impossible I'm up against a better low once I make it, but on 5th street, against all of the other players, should I continue? If there are no other low draws in sight, I think it's reasonable to say that in a pot this multiway, I shouldn't fold the draw, correct? Since it's 4-way, my raises are for value, but I think I should've started raising on 6th street. I think going for overcalls and then raising when it's back to me would've been smarter as it turned out. Thoughts?