<prompt> Human: I have a kind of unique financial opportunity and Id love some outside thoughts.Im a single 30 year old male from Texas, and Ive been offered the opportunity to sell a catalogue of intellectual property that I made in exchange for 660,000. The problem is Id essentially be selling my main source of income. Financial Situation-The catalogue generates me about 11k a month in income.-I make about 3000 a month that I make from other work not for sale.-I own a 300k condo outright-I have a house that I bought for 479k. I owe about 376k. My interest rate is 3.875 on a 30 yr note.-I have 7 renters between both properties and after HOA and mortgage on my house I pocket about 1000 a month.-I have about 467k in the marketindex funds.-I have a Sep IRA that has 7500-I owe 12,500 on my car. 1.9 Interest rate-Checking Accounts have 13k in them -No other debtIt seems like the buyer is basing their offer on what the catalogue should generate over the course of the next 5 years. If I were to sell Id be allowed to build another catalogue that I think could potentially do well.Im just trying to weigh my options. Do I take a lump sum now and invest it? Or do I hold out and see if I can make more money in the long run by holding it? Thats the hardest question because tomorrow my catalogue could blow up and make 2x what its making now or alternatively it could take a nosedive and make less. However, it has earned consistently for the past 2.5 years.I think my immediate game-plan if I sold would be to buy one more house with cash, rent it out, and start working on a whole new catalogue.My last note is regarding the taxes if I sold. My tax person is trying to find out what the tax burden would be. I believe if its taxed as personal income it would be roughly 4037; but if he can sell it as an asset its 2037;? This is the one point that needs clarification and I should know more next week. If it is taxed as personal income Ill more likely than not pass on the deal.Thoughts on what to do?  <response>: I think my immediate game-plan if I sold would be to buy one more house with cash, rent it out, and start working on a whole new catalogue. I like this plan. It sounds like youve got everything in place to sell this catalogue and move on to other endeavors. Personally, Id take the cash and run. 