I just went through this a few months ago. the shop said it was really hard to deal with the plastic parts next to the rod and wouldn't do it. the dealer said he'd sell me a new crank for 300 so that is what i did.
I'd show the shop your crank before you order the rod kit and be sure they can do it.
As far as the cases, you have to get a good puller for the left side and I used a soft hammer on the right side to pound the crank out of the case because I couldnt attach a puller anywhere. my advise is to slow down and do it right or have the shop do it all including splitting the cases.