Memorial for my husband David Davis

My husband David Lee Davis was murdered on February 10th 2017 in Bingham county, at the time I only had enough money for his cremation which was $2500.00.
Our children have started to grieve their fathers murder slowly but they have requested to have a memorial service and spread his ashes with family and friends, I’m currently fighting cancer and I’m not able to work too much, more medical problems continue to arise. I want to be able to give our children what they are asking for, they deserve to grieve their father and to do it in the proper way! This has been a horrible tragedy and the sentencing for the woman that murdered David is Jan 2, please help me help our children lay my husband and their father to rest. I don’t like asking for help but I don’t want this tragedy to hinder our children anymore. Thank u and god bless u