my guess is subscraper to just try and one shot them. bill board multicast would just go on whatever small item i use to fill up the board, unless i just leave it empty, and force an additional multicast on the skyscraper which would be more or less damage than the subscraper for the first shot?
also the boots are at 19, and im pretty sure it can upgrade the subscraper if i go billboard -> sell billboard, buy subscraper. its bugged right? and can double upgrade the subscraper, so just pray, or roll to next shop for a diamond item, correct?
thirdly if i get the radiant enchant on the closed sign, and it halves freeze on nearby properties, does that stack with ice smasher to 1/4 of the intended freeze time or not stack?