We are in the same ballpark haha.I think another factor to consider is your mechanical skill. If I bought a sport or sahara and wanted to add lockers and a track bar and gearing and what not later I would have had to pay a shop a lot of money in service time aside from parts. If I had mechanical skill and knowledge I would have considered a sport and done my own work. I am what I call a bolt on mechanic - If it requires just some straight up bolts and not too many tools I will do the install.
I have installed a steering dampener, rear bumper and tire carrier, rock sliders, and some lights. I had my dealer do the front bumper/winch and mopar 2" lift.
So even if the parts to bring a sport to a rubicon is only $2000 the cost to have a shop install might cost a few thousand more if your like me and have to pay someone to do it.