Lets take a look at KnitPro Interchangeable circular needles, this is a system that has changed the way I knit and has simplified my stash of needles.
If you are scared of Circular needles take a look at this for some reasons why, let me try and convince you have another try. 

Website: https://stitchesnthings.com.au/Knitting-and-crochet-tools/Knitpro-Needles