Hello,
Blasting yes also uses upload because it is posting information on websites..
If you have a dedicated server, you should not worry about bandwidth, you are fine..
We have plenty of customers running xrumer 24/7 with no problems..
You do not have to push out uploading traffic just so you have the 1/5 ratio..
Normal work is fine, we will take care of the rest... You do not have to perfectly fit the ratio, that is just some information on how our lines are.
Through all of our clients, we have not ever had a customer go over or have to pay for extra BW.