Multiple entry visa to visit son studying in USA

[anagha_r]

My son is will definitely come to US this year for his studies with scholarships. We would like to apply tourist visa for myself and husband who is a manager in a well known India company.
few questions ..
1) Should I apply multiple entry Visitor visa now OR After my son joining a US University so that I can visit him multiple times?
2) Shall I apply now with reason as Visiting my cousin who is employed in a well known US company and tourism?
3) What gives a better chance for getting multiple entry visa- I sponsor myself or my cousin sponsoring me...

[immihelp]

1. Either way.
2. Whatever is the true reason to visit the U.S.
3. Self-sponsor.