P1 Visa entry and re-entry.

[Profootball]

I was granted my P1 visa to play professional soccer in USA. That visa is valid until the end of 2018. I am currently out of contrct with my previous club. I have a flight booked to come to the USA at the end of this month to speak to potential clubs about the forth coming season.

Do I

1- come in to USA on the same P1 visa even though I dont have a club formally attatched to.
2- come into the USA on an ESTA, so as a tourist for three months. Does this then change my future abiilty to use my P1 visa.
3- my P1 was granted on my British passport. If I use a different passport does that change anything.
4- do i need to book a return ticket out of the USA a this point ? I only have a one way at this point.
5- how much do I declare to the customs agents.

Thank you for any and all help. Very confused on how this process works.

Regards,
Profootball.

[inadmissible]

It would not be proper to use your P-1 visa to gain admission to the United States. Use ESTA instead, and travel with a return ticket