Perhaps it's my non-NPHC mind saying this, but I think it's fucking stupid to transfer for the sole purpose of rushing. None of the NPHC organization are going anywhere anytime soon. If you're interested and it's not an option at your school -- wait. Don't fuck up a UH education to see if you can possibly pledge elsewhere.
How would going to one school fuck up the education at another?
You said transfer to Southern, pledge, then transfer back.
Yes,I'm still not sure how this would screw up an education though. I would probably do the minimum 6 hours for finacial aid and the class would most likely a "core" class, so it would no doubt transfer.