just hinges and knobs will make a very different kitchen. Throw in a different light switch, new tap, new light fixture, paint the walls, and do a new counter top from something simple like home depot and it will look very very different and brand new. I did the same to mine and i have those shitty european white cupboards and it still looks great. There's also something called allure vinyl flooring from home depot which can be laid over top of vinyl and is a no glue/no mess easy to install. get the look of tile for a fraction of the price
i know a lot love to paint wood but i think its a crime. You could always strip and restain them. oak is a beautiful wood, think twice before you start to paint. People pay big $$$ still to get oak