Got my ka24e engine and transmission today

[Florida240sx]

What's better than waking up 4 hours after drinking with a headache and going to go pick up engine....well I guess there is a lot things that are better but hey now my project is back on track. Think I"m just going to tear down the existing engine instead of just replacing the head gasket, and send it off to the shop to have some work done. B-day is around the corner so b-day will help get the small parts I need. JE is one of the best pistons to get correct(what comp. should i go with)? aanything else internally should i get?