Good stuff once again Al! I work at handstands almost daily and my push-off-the-wall record is about 5-6 seconds and haven’t gotten it again. I’m learning how to kick up without hitting the wall (or at least not hitting it too hard) which is helping a lot. Also, I’ve found that working at handstand push-ups is helping not just in developing strength but also balance, I find that when I’m pressing I’m usually in a free standing handstand until I get to the top then lose it either by over or under balancing, usually under balancing.
It’s tough for me to put more weight on the front of my hands, I’m still putting most of it on the heel of the hand which leads to under tipping. I’m working on that by getting in pushup position then leaning forward as much as I can. I feel a pretty good stretch in my forearm.
However, I think all the pre-req work can’t compare to just kicking up over and over and over and over and working at it day in and day out. It’ll develop strength and balance at the same time.