Starting a new taco project.. Where to start........

I am starting a new project and since this is going to be a complete custom, i am trying to see where to start. I bought a semi custom taco. air-18s- shaved.... I am planning on a full tube chassis, body drop, IRS rear end, and 22s(which I have already.....), etc.... So I am trying to see where I should start... Should I start on the chassis first?  Take the cab off and go that route and start the body drop? If so, should I gut the cab and take it off and pull the motor? I currently have it on jack stands and there it sits.... I want to start making some progress. I want to do it right and not have to backtrack. So, please, any advice will help. Thanks
 
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start by visiting www.hydroholics.net and juice that thing instead of bags.

Chassis first and stock floor it. Measure the cab and tub out to clear the 22's then go from there. Paint or chrome or both then you have a solid foundation to work with. Be ready to take your time(that is the part I hate).

I want to stock floor it but not really sure exactly how compared to a traditional BD... i need a stock floor BD.. i 6'4 so i need all the room i can get.