First RE Investment: Homestead or Rental

[John Chelf]

Hello BiggerPockets,

I am a new investor in the DFW area and I am in the process of locating my first deal. While speaking with a lender, she brought up that I should invest in my homestead before buying my first rental property so I can take advantage of interest rates while they are low. I was initially planning on buying an investment condo with 20% down on a conventional loan, then buying my homestead in a few months with a 3.5% FHA loan while renting out the other rooms to friends.

What advice do y'all have when it comes to which deal I do as my first investment? Does it really matter? If so, why? 

Any information is very appreciated and I look forward to learning with and from y'all in the future!

John Chelf