sometimes bag weed sprouts funny, ive had mutants grow up nice tho, just give her time. you can keep your plants in cups for a while, but they will eventualy get rootbound. its better to step up your pot sizes instead of planting straight into a big pot. this developes root mass which you can inspect during transplants to keep healthy. roots = buds, if your roots suck, your bud will suck. dont be against the idea of transplanting. go to the basic growing threads and ask questions if you want advice, you will get help there.