I wouldn't really use arkansas stones to hone razors. Get the Norton 4k/8k. DOVOs are good razors but you should check out Tony Miller's selection of shave ready pieces at www.thewellshavedgentleman.com. Members here are also selling some lookers shave-ready for really low prices.
It could be that the disposable blade is just too delicate for your stubble. The same happens when a real straight isn't sharp enough.