No its fine in the house just don't let the house get too cold. Mine was always fine in the house some peps put their gear in the garage or who knows where. If you have to wear a coat in your house than its too cold. I have never had a proplem with mine, just some people do what I would call weird stuff w their gear. If it crytalizes just heat it up w hot water or a blow dryer and shake it real good before you inject, oh and let it cool a little damn blow dryer can get hot. When you are making it for your self you learn crashing is no big deal, but fuck these rookies that buy gear are freaking whiners and babies.
Gald to hear you are runing it w E that will be nice do it about 2 hours before you wo and it will be a great addition. If you have anymore questions be sure to ask. TNE is freaking cheap so no worries.
BTW where do you live?