LST-1 Hull Points

I have recently built a 1/350 scale LST-1 Type 2 and converted it to a waterline model. I’d like to put this torpedo magnet on the table but need to develop the appropriate stats. The weapons and their arc of fire is easy as is the speed. What I am not sure of are the hull points and cost. For Hull Points I was thinking 140 but I’m not sure this works. As for points, this thing is bristling with 40mm and 20mm AA guns so I don’t think it will be cheap. Any suggestions are appreciated.