Congrats, you won't be disappointed. I'd recommend using Mazda Comp mounts instead of solids. The solids are not needed to stop wheel hop.
I am using the trac-lok lsd that came with the carrier, but rebuilt it using the Ford Racing carbon clutches. No issues on the street or the track. I've also had great luck using the aftermarket GKN outters, if you want to be able to sell your current diff and axles complete.
A quick note about the driveshaft. I know that the 2 piece Corvette yoke (same as linked above) is recommended, but a standard 1 piece isn't really a big hassle to install. I figured this out when I twisted the 2 piece yoke and went with a 1 piece forged unit. Actually, I think it's a bit easier because you don't have the subframe in the way while trying to install the pinion flange bolts. You don't have to completely drop the subframe, just drop the front enough to get the driveshaft in. I leave the shocks attached, unbolt the cross member and torque link, and lower the front down with a jack. As many times as I'm sure you've had the subframe out, this should be easy peasy. Plus, you can reuse the yoke you already have.
If you have any more questions feel free to ask.