It's really not too bad. I used to make my girls tons of little knit dresses, t-shirts & even bathing suits. It's possible without a serger. Sometimes it's easier to do hems (that tend to get wavy) with a strip of super thin interfacing in them. Having some neutral rib knits on hand for collars, cuffs & waistbands is nice too, if you can find them. If something gets wavy use lots of steam, it'll correct lots of things. And a little extra time to topstitch does wonders.