Hey, 1st buy accs buy AGED NON-PVA accs 6 month and older then you should warm them like OP said. With fresh accs you`ll just waste your time and get banned very quick.
This method will work only after you have warmed your accs and get goot target sources (dont expect $100 of buks in the first month). It is working for me slowly... but working..
I`ve spend like $50-60 for MP,accs,proxys,domain,hosting, etc and got back just $15 back for the last 2 weeks (16-30). Now AVG payout per day is $3 and growing each day on $0.5-1.5.
here is very important thing WAIT, TEST, ANALYSE, RESEARCH. MONEY WOUNDNT JUST JUMP IN YOUR WALLETS. You should work hard on targeting. Just do A/B testing.