Can anyone give me some advice on the best and cheapest way to install a 12m handrail up a driveway (relatively steep) so an elderly person can get up and down it easier? There is an 18" flower bed at the side and I was going to use Metposts and 75mm sq vertical fenceposts with a decking handrail attached onto the tops. The bottom post could be anchored into brick but the others would all be free-standing. Would this be secure enough? Or any other suggestions? I cannot fix it onto the block paved driveway as cars still need to get up it.