If you were bigger you'd be looking for a COO - Chief Operations/Operating Officer.

A CEO does strategy, fund-raising, investor relations, and top level PR and interviews. CEOs don't primarily deal with the details you're describing - although in startups they sometimes have to.

If you want to be more down to earth about it, hire an office manager to do stock/order management and perhaps some HR, and a temp or book keeper to do the boring paperwork.

How? The usual places - online jobs boards.

If you don't like the paperwork I'd make sure you get an accountant to keep on top of the even more boring things like tax and PAYE. Otherwise the Revenue will hit you with a giant bill and close you down.