PPoR Becoming 1st IP

Hi Guys

I have been reading the different posts on this forum for sometime now and have learnt so much just from reading what you knowledgeable people have to say.

I am currently living in my PPoR on the Gold Coast and will be moving out of it shortly to a unit that my parents own. I will then rent my unit out and begin my adventure in Property Investing which is very exciting for me.

Here are few of of my financial details at this current time:
Income – Approx. $110,000 p/a
Unit Purchase Price – $312,000
Unit Value – Approx. $320,000
Loan Amount – $249,000 currently at 5.21% variable
Rent For Parents Unit – $350 p/w

I have a few questions regarding the transfer of my PPoR to an IP:

1. Will there be any extra cost to me for stamp duty as my unit settled on 1 July 08?
2. Is it best to keep the loan P&I or IO, I can manage P&I quite easily but just wondering if it is worth freeing up the extra cashflow with IO?
3. Is it best to set up my IP in a Trust or similar as I read a lot of pros and cons?
4. Is any one able to recommend an accountant on the Gold Coast that deals a lot with property?

I am extremely keen to get started on my investing and grow very healthy portfolio.

Any help or advice you guys can give would be greatly appreciated.

Thanks

Jason