I pulled the trigger and finally ordered my future Roadster. I can't thank everyone enough for all of their detailed posts and build threads!

I'd like some input regarding a couple decisions:
Purchasing the complete kit with:
- LS motor mounts
- PS
- Blueprint LS376 with TKX
- 17" Halibrands with tires
- Planning on drop trunk

I'm questioning whether or not I should order the 3-link or the IRS. I don't plan on tracking the car and want to know if it's worth the extra cash to go with the IRS. Additionally wondering if there are any unforeseen/hidden costs or headaches that come with that decision to upgrade to the IRS.
I'm also considering the upgrade to polished stainless side pipes. I'm aware of the Gas N Pipes but price is pretty hefty for a small reduction in noise. I read on some posts that the weld and finish isn't great on the FFR pipes but these were posts from 3-4 years ago. I'm assuming FFR continued to improve upon their product and wondering how folks are feeling about their latest pipes being delivered over the past year or so. Thanks in advance for taking the time to respond.