Little extra depth is needed. Can't speculate if you're facing five limps, a 3x from early position, or a 2.5x reraise from the small blind. Best theory, build the pot if it wasn't done to a comfortable size without you preflop, and throw your weight around with your early position (barring number of players, an ace on the flop, or flush/straight heavy boards your cards can't build off of) and decide if you feel good enough about getting the rest in later. Short stacks it's either a must shove preflop, or feigning a suckout through five cards playing bleed bet poker