Exhaust Long Tubes And O/r X Pipe???

Hey guys I'm getting second thoughts about my exhaust setup laying here in bed and it's bothering me! So I have a few questions... I plan on getting Pace setter long tubes and the pace setter o/r shorty x pipe. My understanding is that a shop cannot cut my cats off (I have all stock exhaust) and install the o/r x pipe. How in the world am I going to get these installed? I have minimum experience, how hard of a job is it to install the x pipe myself? I live in Michigan with no emissions testing or anything. I want to just have my stock mufflers cut off and install the flowmaster super 10 series. Is all this possible? I don't even know what to do anymore and it's driving me insane! PLEASE HELP.

Awesome thank you so much @Nightfire for the explanation that helps bunches! I heard long tubes are a pain... How much do you think those would be to get installed? This is such a reliever to hear! I was worried my whole exhaust setup was out the window for a while.

I did a lot of research on these headers thinking the exact thing @sethahoward. But almost all the reviews were positive and said they did not leak at all and didn't have lose bolt issues. My friends 02 has a set of these and he's had them for 8 months with no issues! I think it's worth a shot and if it doesn't late shame on me for buying them!