The advice above is good, get an engineer which will cost you some $ upfront but will save you $$$ later when your local Fire/Building Department evaluates your project. They won't be arguing with your engineer but they will with you. Buy the codes and read them.
This is an overview and not all inclusive. An F1 occupancy allows for production of beverage grade alcohol of more than 18%. IFC table 307.1(1) limits a non-sprinklered F1 to 120 gallons of class IB-IC flammable liquids and class II combustible liquids at 120 gallons. Per table 2703.8.3.2 this limit is per control area. A control area is defined as a room with a 2hour fire rated wall and you can have multiple control areas per floor depending on construction and building type. Sprinklers increase the hour rating in a room/building and double this capacity limit, thus the 240 gallon.
The barrel exemption per IFC chapter 27 - 2701.1-9 and IFC chapter 34 3402.1-10 is just that, so the rest of the chapter does not apply including height limitations, etc.
Most spirits are bottled as Class II combustible liquids. Spirits stored in containers less than 1.3 gallons (5L) in storage are excluded from the volume limits per IFC chapter 27 - 2701.1-1 and IFC chapter 34 3402.1-2. Once packaged, the individual bottles should be stored in cases and placed on pallets by product type.