For the Boys of Summer

I am planning a trip for my son, Brenden,13, who has ADD/ODD, and three of his friends, Jordan,16, Jacob,13, and Nickolas,10, also suffering from similar problems.
My wife, the Boy's Mom, and I will be taking them.
The three boys lost their Dad about 4 years ago. Their Mom has been single handedly raising these boys as best as she can.
They are living on Survivor Benefits, and Social Security. Their Mom has some serious health issues also.
I am in Kidney Failure, and am on Dialysis, so it is hard for me to be able to do alot with my son, and wife. I also am on Disability.
None of us have ever been to a Major League baseball game.
I would love to be able to take my son, and the others to experience this together. We are pretty much like one big family. With the family problems of both families, money is tight.
We live just outside of Spokane, WA. It is quite aways to Seattle,WA. With rental van, gas, food, tickets. It adds up pretty quickly.
Your help with this once in a lifetime trip would be most appreciated. Thank you, and God Bless.