From what chucklehead describes of the LZ, elevated helipad profiles don't seem appropriate and unless he reduces his AUM considerably, he is unlikely to get a PC1 profile that works.
Chucklehead - if an engine stops at 150' then I would pull until the Nr starts to decay and then back off slightly so that you are optimising the full power available on the remaining engine but preserving the Nr.
I am lucky to have a training switch to allow me to simulate engine failures during such profiles and the difference in rate of descent between just having normal/beeped up Nr and letting it decay by a few percent is quite marked. Nr is life and life is Nr as several wise people have said on this forum.
Don't worry about VRS - you won't get near the RoD required (probably somewhere around 12 - 1500'/min for your aircraft).
Presumably you do beep up your Nr for these arrivals and departures?