My thoughts are that 5's will come relatively soon on good volume. 100-200mil, but once the 5's do hit, we will need to see volume up over 500mil, over multiple days, just to hold it.
The flippers will all be selling when the bid hits 4. Being that they are the majority, it'll take a lot of new investors to keep this going. Hence, why I have such a big number in my head.
Personally, I'll sell a portion to cover my costs and then hold the rest with house money. I hold 4.5 million at 3.