If you need the cash or value the certainty of the 20c offer,...

If you need the cash or value the certainty of the 20c offer, you need to both vote against the AEP offer at the EGM and accept the Westside offer.
As rabbitoh suggests, the AEP offer values the company much higher, but is a long term arrangement. My guess is the market price will be lower than 20c if the AEP offer is endorsed at the EGM, even though I am inclined to think it offers the superior long term value.
The ASX price is set by whoever is buying or selling today, not the long term holders.

I am still waiting to see if a revised offer from AEP emerges. They are certainly cutting it fine.
I suppose a revised offer would carry DGR's vote, and presumably enough insto's would be on board to hit 50%, but you would think they would be touch and go.
I am almost inclined to offer my proxy to the chair to vote as they see fit, in case there are any last minute changes.