First off BE HONEST! I know you want to hurry up and find someone then flip it into some sort of poly BAIT AND SWITCH... but would you like someone to tell you "HEY yeah I want poly".. only to find that they want you in a mono relationship and then do everything they can to try to flip you to their side.
Honesty in the first place is the best. But you have to be aware, there are women who are looking to do to you what your considering doing to them... and in my opinion its BS.
The lie way is the quick easy and fast way of putting a false relationship together.. yes I said FALSE!, because it will not last because a relationship based on a lie is not a relatinship at all... its simply a ploy.
Build your home on honesty! Tell them upfront.. and PRAY! they are honest with you too...