Unless you're purchasing raw drivers, component speakers already comes with a crossover. Component crossovers are larger than coaxials. But coaxials also have crossovers smouldered in. The only time wala yan crossover is if (A) raw driver (B) full-range driver.

Targa has good potential. But needs proper EQ to really shine. Personally, I think it's best you jump to Morels since #1 rule is always to buy the "best" component speakers you can buy