Wood beam

Its the header above the garage door that would be supporting roof, the door itself has a separate header
This header is held up by the same dimension wood in each conner of the garage. In addition there is studs and double studs were the garage door sits but as I said the actual span is eight foot
I pulled my small welding machine out of the back of my truck many times but that machine is 500/600 pounds, what I was thinking of lifting is double that and thinking about it, no good
I looked at the gantry crane in HF today, members price is $650
I dont care for the pipe supports it has, they are bolted on and look useless. The uprights welded to the base, the weld looks like its a 1/8 bead. The I beam is light and its supposedly rated for a ton
The steel and casters will cost me but what I make will be way stronger than that and I can custom make it for my garage.....So im going to price the materials and make one
Thanks for advise, always appreciated
I like the Steel Idea! If you ever did go wood, could you not add a 2nd beam, across the same span, add some bearing points, and make it outta micro Lam? Or just 2) 2x12 SYP, w 1/2" ply in the middle? Anyway, Metal IS STRONG!!!!! And YOU'RE THE METAL MAN!!!!!!! Have a Blessed New Year Steve! Peace,!