To answer the question re wall thickness. Conex walls are only 1/8" thick. I find it easy to cut them with a metal grinding wheel and even a Sawzall w metal cutting blades. You don't need any fancy tools. But keep in mind that it is a type of steel and that it is heavier than you look. I have had the pleasure of building 2 Container homes...so I have gotten to experience most of the pros and cons and potential issues personnally:D