Can I vent my plumbing prior to the main entering the house?
That's an interesting question, with a logical thought process applied to the term 'vent'. With that being said:

The wastewater system contains noxious, ﬂammable sewer gases. These gases are kept out of the house by means of a P-trap at each ﬁxture that seals the end of the pipe with water When wastewater is released from the ﬁxture, it displaces water held in the trap. A vent on the sewer side of each trap supplies air so that draining water cannot create a suction to pull water out of the trap.

Source

Vents aren't used to let the noxious gas escape out of the house, they'll always be there so it's impossible to get rid of them. The vents are used to avoid siphoning of the water seals which prevent the gases from leaking in to the house(per example, why you aren't allowed s-traps anymore as they had a risk of siphoning). Because of this you are required to have most fixtures within a certain distance of a vent or vented stack. 

My post is more for information rather than an answer. 

I believe this post will be of use to you, however.