Welcome to the forum!! And CONGRATS on the new ride too.
From my own experience all aftermarket RMM's will cause some additional vibration, especially when the A/C compressor is on. But they also help eliminate front wheel hop. Go with a lighter Duro rating, 60-70 D's and one w/the largest bushing you can find and it will reduce the amount of vibs in the cabin. I am currently running the James Barone Racing billit aluminum mount, 70 D's and it's not that bad.
Again, depending on the mount you may have to remove the mount link from the transmission to install, especially the bigger mounts like mine. 2 bolts for the mount (17mm) and 3 on the tranny (21mm IIRC.)
Solid shifter bushing are a 15 min install. I did the TWM SS and bushings all in about 1/2 hr. Just pull up the console and its all right there.