I am sorry to hear about the condition of your daughter.
Just this Friday, I saw the grandson of my brother who is just a few months old. His extremeties are purplish which gets worst when he cries. One of the arteries to his heart is blocked and the heart also got a hole. His heart could fail anytime but if he lives to 2 he needs or about 1-1/2 years from now, to be operated on (open heart). Subsequent operations are needed when he gets older.
My brother cannot afford the operation. He is a Jehovah's witness and live by his faith. Soft spoken with a kind word for everyone, some pastors(preachers) I know pales in comparison. Sometimes, one can't help but ask why bad things happen to good people. But sometimes, we just have to be strong and believe.
I wish you success in your fundraising and hope to hear some good news later.
As to you question, the Epson Workforce 1100 should fit your needs. Jetpro soft stretch or JPSS paper for white shirts; 3G opaque for dark cotton, Jet Opaque II for dark polycotton.
I've often heard of cobra inks(I use generic inks) so you may want to look into this.
As to heat press, there are the stahls, hotronix, etc. Mighty press (from stahl) is more reasonably priced. The lower ends are the sunie's, gecko(?), and the one from pro-world. I use a China made press and can say that they get the job done (if budget is a consideration).
Good luck Gregorio and do search for more information.