The implication of doing a DIK and then using the tithing cash is that you are
1. "prepaying" your tithing with a DIK at that point and then using the would-be tithing from your income going forward
2. as you go along you are saving up your tithing somewhere (checking, savings, whatever) and tracking it and at some point you need that cash so you DIK and use the saved up cash
I guess one is prepaying and one is post paying. Which do you do?
I would say that with the every-other-year tax deduction, it would make sense to do #2, but I'm just wondering which you do.