I'll be making around 250-300 posts considering my free time. Post your offer for the whole month. Bitcoin payment
I can give you 0.005BTC/month ? ok ?
There is an existing signature campaign, which has vacant slots for junior members, and which pays 0.01 BTC/ month.
https://bitcointalk.org/index.php?topic=831294.0
You really didn't need to create a separate thread.
Refer this thread for information on all signature campaigns.