Congratulations and all the best.
For your plan will be take off some furniture s, bring others and fix some supports please you inform and discuss with K.Kai Saowarot (Exec.Asst. to boarding) first. She can explain and make sure can't do without of school authorization.
For a washing machine our team say you much buy waterspout system by pump only and other thing design,size, color depend on to you chooses