Tyvek is an excellent protective suit…until it rips out at the crotch because ya got the one that was too small, and yeah, they rip pretty easily, said the guy who used to wear them pretty regularly for work.
Pro tip, you may want the yellow water proof suits instead, yeah, you stand out more, but they are slightly less prone to tearing.
Blue lasers (405nm) seem to disrupt digital cameras far worse than green. They overload more pixels. Keep one in hand, or on top of hat/helmet. Although the later might make you too unique.
That isn’t a “Steam Punk” mask. While it may have been adopted by some admirers of Steam Punk fashion, it’s more commonly associated with it’s original purpose. It’s the mask worn by plague doctors in the mid 1600s. That’s definitely “old time-y”. I certainly don’t look at that mask and think, “steam punk”. I think, “plague”.
Tyvek doesn’t breathe. if you’re exerting yourself (running, climbing fences, etc.) you will steam yourself.
OTOH, it is thin, there’s no reason that it can’t be a base layer under jeans or grey sweats other than how hot it’ll be.