Hi Ed
Welcome to the forum. However, I think you are in the wrong place if you think anyone here is going to try and talk you out of building an oven
Everyone who posts has a serious case in oven insanity
I started my planing with a BBQ and smoker. I then caught the bug and added an oven. As my planning has progressed I will probably drop the smoker ( will use the oven) and just build a grill and oven complex.
There are many good reasons to build an oven, (Pizza, Pizza, Pizza) and absoutely no reasons I can think of to not build an oven
Bruce