This should be a spot where you're capable of both betting and checking, esp. if you play against these folks often.
If you don't mind the ultra-high-variance, probably-negative-EV (but might give you some image equity if you rebuy or play with the same people) possibility of dusting money unnecessarily and/or shipping your stack, here is a possible way to play this hand:
Flop: bet 30 and be prepared to stack off.
Turn: bet 70 and be prepared to stack off except on a non spade board pair.
River: stack off for 135 on any non-A.
If we're trying to play the hand profitably, just check-fold. If V is not making mistakes, he won't pay off a FD. Also, if others call or raise, it greatly increases the likelihood you are getting some reverse IO on your FD.
The reason semi-bluffing is profitable is because you have FE. In the absence of FE, its only strengths are disguise/making you less predictable, which is only useful short-term if you hit, and long-term against observant opponents you will be playing at the table with for a while or run into repeatedly.
But if you think they might fold an unimproved top pair by going for the triple barrel, then it's something to genuinely consider, especially if you aren't just going to ship your stack, go home, and never see these players again.