Lookin good so far, you will be glad you used alum, I did one in a long time ago in wood and after it sucked up humidity fer a few weeks, you could hardley pick the darn thing up, man wood can really hold some water. Funny place the maker put the coast guard sticker, seems like I have always seen em on the transom. Ya mite outta make sure that can be seen later if ya do any river stuff. We are gettin geared up to do ours, came across a couple plastic foot lockers to house my batteries at wal-mart over near the auto stuff, they are real sturdy and the price was rite. (Acid and alum dont play nice together). We plan to place the batteries center and low with cable to where it is needed, sure made the last boat real stable.