Lynn911 Dallas Realtor & Consultant, Loan Officer, Credit Repair Advisor
The Michael Group - Dallas Business Journal Top Ranked Realtors
If there is equity in the property you can search for a lender who does, equity based financing, also known as a hard money lender. The interest rates are higher and the length of the loan is shorter than the traditional mortgage loans but it could buy you some time. Here's a complete description: http://en.wikipedia.org/wiki/Asset-based_loan
Secondly, you can try to re-negotiate the terms of your current contract with the current owner. If you cannot pay all of it by April then perhaps the legal owner will take less with added interest. It's always best to be upfront with the owner, most times they will be willing to work with you, because getting less is better than nothing at all. Good Luck To You!