HOW TO SPEND CP PROPERLY

recently i got interested in the x2 cp event from cod webstore and i purchased cp worth of 500 INR (800 cp) i was stupid enough to pull for 3 draws thinking odds will favour my dear soul , oh boy was i wrong i wasted around 340 CP for ashura, krig 6 mythic and the legendary kn-44 draw (for the girl ofc) so how to spend the remaining cp? 730cp remains and i wanna save 660 for bp ofc