Depends how big your garden is and how long the border you want to plant is, too - the hedge mix you describe will take up a fair bit of room from front to back. Beech is best planted alone - its a very greedy plant and won't tolerate much else nearby.

The nicest cottage garden hedges I've seen were a) hardy fuschia dainty red flowers from spring to late autumn. b) Forsythia when clipped is a mass of yellow flowers in spring followed by pale green leaves both look good with picket fencing - in my view :o))

many shrub rose makin good hedge but chossin one htat repeet flower is best