Don't rule out the possibility of the hardtop version of the HC bars. I think the non-hardtop version works better for shorter people actually. thought I needed the non-hardtop ver. for the same reasons but found that while it was a little higher, the bar sat right above my head, a bad bump in the road and I could have smacked it at the weakest part of my skull, dead center. I've had a concussion level smack in that spot before and it is no fun at all.
The hardtop ver. while a little lower stays behind your head for those situations. A good foamectomy can go a long way to stay under it, and SFI padding is a must.
Sit in a couple before you decide. If you're ever around Euless during the week feel free to swing by and give my car a try. It's a proper padded Hard core hardtop with as low as a foamectomy goes.