Need more land expansion

I have been playing since August and have yet to purchase the final row and a half. I like my Springfield as is and am no hurry to get those final plots until there are new buildings to place (i.e. the long rumored Rainier Wolfcastle mansion). Don't need nor want the land for additional houses as my Springfield currently pays off around $100k to $120k a day. Right now it's closer to the latter as I have my characters going back and forth between 8- and 12-hour tasks while I complete the "Herman" story line.

In the meantime, I've almost got $8MM in money and counting. Bring on Squidport!