First let me start by saying I am not familiar with Hensel's products. But I know someone who is, Rolando. Attend one of his seminars to get some hands on experience with their products, and an educational discount. It's a bargin at the price. Nothing beats handling the equipment and actually shooting with it.
Get some Matthews C stands, they beat the fold up ones hands down.
I find more and more I want a tight spot that I can't get with a 10 degree grid. Consider a fresnel spot, though it probably blows your budget.
Your getting a grid set, make sure you have the reflectors or holders to grid all or most of your heads.
Thow in a set of colored gels from Rosco.
I like Pocketwizards, and now you can get them built into many products.
Have fun with your new lights.