The bhp you are after is very easy to achieve and you can pick the parts up relatively cheap if your able to wait for them to come up on the forum or on the bay for a good price.. easiest way would be get you k03/s hybrid'd at somewhere like turbo dynamics or cr turbos etc.. but the best way is to replace with OEM parts that can handle that power this route would be the K04 turbo and manifold off the LCR or the S3 BAM or AMK or APY engine ?? if you fit this with supporting mods like a better intercooler.. colder spark plugs.. intake TIP.. few other bits and bobs you can easily see 260bhp.. if you get a donor engine its even better.. you can then strip all the better parts off like injectors coil packs etc..
HTH