Block ad network in google admob

i want somone to block admob ad networks and leave these networks enabled such as :

Hearst Digital Media
InPowered
Kapanlagi
Yandex.ru
Open Inventory
WebAds
Madhouse Mobile
CPX Interactive
Guru Media
Advertising Alliance
Compare Group
transcosmos
eHealthcare Solutions
KPI Solutions
ScaleOut
Bannerconnect
Independent Traveler
Quantcast
MediaScience
AdKnowledge
Barons Media
Specific Media
InterCLICK
Dun & Bradstreet
Advantage Media
Bridge Marketing
Belgacom
Connexity
HealthiNation
Advertising Technologies
remerge
Media Decision
Performance Advertising

i have adventure application game not finished yet it will finish in this week so i want to know how the people will know about my application in google play and how they will download it.

do i have to make app promotion through google ads because if they bring for me 1 million installs they will take like 3000$ dollar do i have to pay this much and am i going to get alot of revenue which will pass more than 10000$?

and which countries have high cpc revenue?
i need your help.

thanks,