4DFMW_KE30

hey guys I'm a 19 yo 3rd year apprentice mechanic, whose just bought a little 4 door KE30 with a 3k and a four speed behind it. the rings are shot in the fourth cylinder and its full of oil. blows a little bit of blue smoke, but the cylinder four plug is caked in oil. (hence why i think the rings are cactus) i have a 4KC Engine sitting here and wan't to throw it in but i was just wondering is there anything i should tweak out of the car? ( i thought i could play around with the higher compression of the 3k head on the 4k block ) but any suggestions would be super, cheers.