Florida band trip

Hello, my name is Bill Stage.  I am a father of 5 children and have been married for 22 yrs.  My wife and I have worked multiple jobs at the same time to keep our family going. However 3 years ago our family received news that my wife had a rare brain cancer.  After 3 brain surgeries and many months in the hospital due to complications, such as meningitis, encephalitis, and radation necrosis.  She had to leave her job, and has been on disability for 2 years now.  She is determined to get back to work.  She works very hard each day to regain her reading, writing, and communication skills.  Unfortunately our combined income has left us living paycheck to paycheck with no money left over.
I am trying to raise money for 2 of my children to go on a trip with their high school marching band to Florida.  They will visit Disney and March in a parade there.  It is a week long trip and will cost $1100 dollars each.  I am also looking for a little extra for both of them for any extra expenses they may run into like food and suveniers or emergencies.  The deadline for the trip is the end of December 2016.  The school has made up a payment plan, but as of yet I have not been abe to meet the first two payment dates of $200 each.  It would mean so much to me for my children to have this experience.  It is something I know I will never be able to give to them on my own.  They are both excellent students and amazing people.  I dont think thank you would be enough to express how much your help means but it is all I have.
Thank you very much.
Bill S.