Have them do the bushings, you can do the stabilizer one while they have the shifter out. It's one more bolt to pull off the other bushing on the transmission end, pop it out and press it in. So, if you want to take them the long flat one and have them replace your stock one while they are doing your shifter and do your other later, it'd only be one bolt.

But, while they have it up I'd have them do the other bushing as well.

I've done 3 Bushing/Shifter installs personally, super easy.