sloped metal roof for a woodshed

I am building a 10 X 10 woodshed and framing it as normal framing. The roof is going to be a 3/21 sloped roof and I was thinking of using metal roofing from HD in 12' lengths (metal sales roof mfg.). I won't be putting down any plywood under it, and just using 2X4 for the rafters. I know I can attach the metal roof to the 2X4 rafters, but what about a drip edge. I will only have a 2X4 eve around the whole roof and the manuf has this large eve/drip thing that looks just like a very large drip edge. Think I will have any issues if I just use a standard aluminum drip edge insteal all the way around? This is my first metal roof and I think I only need 4 sheets of this stuff (36" each wide) and will have 12" overhang on each side (roughly). I live in Northeast.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.