You're good, although I found some sharp edges in the tubing from the welding process the hard way. (like a short to ground that blew the brake light fuse) I made up a better wiring harness with some extra protection. All the wire splices were soldered and sealed to prevent moisture problems down the road.
You can see here were I coated the inside of the frame with Eastwood's Internal Frame Coating. I'm hoping that will slow the rust down. It is a zinc based product and should help do the job. One other note is the shrink tubing I like is a double wall with a glue inside that will ooze out to seal the connection. The clear is great because you can inspect the connection down the road.