My first build was a reverse flow. Works like a champ. However, it is not practical for what I will be smoking lots of, and that's sausage. That is where my current project is, a 1950 fridge conversion, made mostly for sausage and snack sticks, though certainly not limited to them. Will also do whole Turkeys and Chickens in it as well. My horizontal works great for things such as brisket and ribs. Even though one could make a vertical wood burner, the fridge I am working on will be charcoal, simply because the firebox will be directly under it and I can expect to get 12 plus hours of burn time on one load without tending to it like I must with my horizontal stick burner.
The only answer to your situation is to build one of each
. Besides, it would be fun....
Either way, be sure to ask questions along the way and learn what has worked and what has not worked from the members here. I spent a good month if not two asking questions and making sure I understood how to go about it. I promise you, asking questions and learning the small tips and tricks will shave lots of time off the build, not to mention maximizing the smokers potential. Good luck, and post your builds progress in detail.