The figure you give depends on your feelings which are created from your internal and external circumstances. I immidiately asked myself the question, "What do I want?"
This was my answer: $2,000,000 for property, $1,000,000 for the house (I live in Silicon Valley), $2,000,000 for traditional reinvestment, $1,000,000 to start the next company, $6,000,000 total for each partner,
After three months, it depends on where the software is. However, the purchasing company will be the one evaluating that aspect. For me, it is a question of what I want versus what they are willing to give in return.