The same thing seems to be repeated throughout this thread. Bottom line is that if you have the money, skill required, and the ability to stick to this project, then you could do it & should do it. However if you dont have the money, or even if you do, and you arent willing to see this project through to the other side, well then its a no go or else its a waste of money and time. This may sound hypocritical too since the amounts of resin, paper, glue, bondo, smooth cast 300, and silicone for molds needed to create a full Master Chief suit is quite a bit, which is very expensive too. But in the end it is about the money in your pocket, and what you yourself can do.
Good luck with your decision,
Super-Ang