Don't know about DelftShip because I am using Freeship. It is still in development just by someone else. Called Free!ship PLUS now.

As for Tons and Feet what I did was created me a small chart in Excel or Word with Lbs and the Long Ton equivalent as well as one with inches and equivalent in feet. Printed it, trimmed it and taped it to the monitor. So I can quickly reference it. I was just thinking about updating it and adding something else. If so I will post a link so anyone can print it out.