Is a sequel really necessary?

I wanted to address the question: why have a sequel?

If you've read Finding West, you'll know that the story isn't complete at the end of the novel. I originally intended on writing one stand-alone novel but my publishing contract for another book restricts me from self-publishing anything over 70,000 words. Finding West clocks in at nearly 60,000 words. I couldn't finish telling the story in 10K words. Just not possible.

I hope this clears up any confusion. I'll be working on the sequel, Heading East, in September and will hopefully have it out by November *crossing fingers*.