If you have the time, energy, space to plant that much then it will absolutely help. I would suggest finding something that blooms when everything else is done. If you plant something that blooms when everything else is blooming it may not be as effective as you'd wish. That's when the all beekeeping is local kicks in. In my locale we get a steady stream of nectar from may through July. I am far from saturating my home apiary so what I plant is going to be beneficial to me (apples, pears, garden, etc).