I had a wood bed trailer and sold it to get a metal deck, much better. From projects to cinder blocks to steel shipments, it's been through a bunch and keeps on going. I wish I had bought a 18-20 foot trailer, but this 16' dove tail hauls Mustangs just fine.
I didn't do a tool box up front, but did weld up a receiver for a winch, another item that will spoil you. It has been a fantastic investment.