I went the chemicals way mainly for the cost, I didn't want to buy or rent a compressor, buy the walnut shells and the blaster. The price would go up really quick and I didn't think it was worth it just for a one time job.
From what I read on different DIY, people could just slide the radiator fan up, but mine was attached at the bottom. Once you know it its easy.
Car feels good, solved the little hiccups and idle is much much smoother.