If you dont have so much cores then read this will help you so if you want to mod a primed mod to rank 10(max) it cost 528 Gold Cores but if you want to mod it till rank 9 it cost 264 Gold Cores so you can mod 2 mods till rank 9 or 1 till rank 10 and the difference is like 10 % or so I prefer to u mod 2 mods till rank 9 and not till rank 10.
Ceres, the asteroid belt's only dwarf planet, is about 950 km in diameter, whereas 4 Vesta, 2 Pallas, and 10 Hygiea have mean diameters of less than 600 km. The remaining bodies range down to the size of a dust particle.
There is no such a planet that is not either a gas giant or a terrestrial planet. Pluto is not considered a planet any more, but an icy dwarf, as opposite to Ceres, which is terrestrial dwarf. Well, technically, Jupiter has a rocky core, where Neptune, Saturn and Uranus has an icy core... but still, all gas giants. There is no planet that matches that description unless you start talking about trans-Neputian objects, like Pluto, Ceres, Sedna, etc, which are basically just giant rocks.