Help Me Plan Out the New & Improved Shop

The shop was fairly well organized -- Billy has one side for his projects / resto work and I have the other ....





7'x'4'x3' powder coating batch cure oven
Household oven
Mid-sized blast cabinet
8' x 4' work table
Spray rack
Large A-frame spray rack (motorcycle frames, rear ends, etc.)
Parts washer (rarely used)

Really crappy shelving (3 thin metal ones and one made out of 2x4s)
Upright inoperable freezer & fridge (powder / parts-in-progress storage)
Metal closet (blast cabinet accessories and miscellaneous storage)

There is a 16'x40' lean-to planned to go where the tree fell so Billy can store his Ford tractor, bush hog, sickle mower and projects that will also (hopefully) house a larger 8-foot blasting cabinet so that will free up a lot of extra space in the shop. How would ya'll fill up that extra space?
Organize the items in red in the most usable arrangement,Parts washer can go on Billys side.
Number one I would get real shelving.
Number two,I do not know how hot that shop gets but you need another garage door to get some breeze thru that shop.
Sky lights would be great as well.I also like exhaust fan mounted on the ceiling,they work great and can be adjusted to turn on at a specific temperature.I included a picture and a link from home depot.
http://www.homedepot.com/Building-M...splay?langId=-1&storeId=10051&catalogId=10053




I would pour a slab on the opposite side of your garage door and extend the building at that time that corner that is cracking could be dug up and have some metal jacks installed to bed rock and concrete poured around it or a pier could be poured as well.Of course when this slab is poured you would have your drain installed and concrete floated to run all water down drain.
Are planning on pouring a slab on the 16'x40' lean...

I need the dimensions of your building,so I could tell you how much for the steel,tin and slab to extend your building.
Material cost and what would be fair for labor.

I poured a slab in my old horse barn shop to put my lift and spent 1645.00 for a 14' x 21' foot slab 6" deep and 2' beam under where lift was installed.

which included:
120.00 1 yard of base,(sandy loam)
600.00 for rental for trax loader (bobcat) to remove asphalt
75.00 for rebar 3/8 " and 1/2 " for cage to beam my floor under lift
400.00 for 5 yards of 5000 psi concrete 80.00/yard delivered
450.00 for 2 man crew to pour and float it out they were there 4 hours
floated out every 1/2 hour
Of course I did all of it myself.I got pictures of it on my shop computer.