C Corp formation before or after first RE investment purchase

[Jeremy Speer]

Been in construction for the last 21 years from residential remodeling and new construction to building out high rises and everything in between. Moving into the investment side of things and I am spending all my free time soaking up knowledge from every source possible. 

At what point does it make sense to set up a Corp or LLC? Having it set up before my first RE investment purchase will give me the protection but is there a tax benefit one way or the other?

Thanks!