How early should I contact a real estate agent if I want to buy in the winter time?

[Dave Vidales-Sanjuan]

-I plan on buying my first house hack in the Pinellas County area around winter time when hopefully prices drop a bit.

-I will reach my savings goal in September. No debt and good credit score.

Are there any steps I should take before I contact one? Also, how would I screen for a good one that has knowledge and can help provide guidance with house hacking?