Main Gas Line Crimped

I have recently acquired a 1978 Sovereign International 31'. Upon inspection found main gas line crimped approx 5' downstream of connection to propane bottles. I cut the line behind the crimped area and disconnected from Propane regulator (see pics). I purchased some 5/8" type K copper gas line (same as original equip and some compression fittings. The plumbing supply store I advised that it would take special equipment not available at HD or Loews to bend type K tubing and flare this stiff tick walled tubing. I have been reading the Forum and found that compression fittings are not recommended, only flared fittings. so my dilemma is how to flare and bend type K tubing and how to join with flare fitting to the existing pipe. In the forum I have seen re-piping with black pipe and the softer L type 1/2" copper and where to purchase tubing bender and flaring tool at Harbor Freight for around $40. Harbor Freight does not have anything that will bend or flare 5/8" type K copper tubing. Has anyone out there in Forum land repaired copper gas tubing with the original 5/8" copper tubing. And where can I get tubing hangers? I went to boltproducts.com and found them, but they do not sell direct to public.