I have an Induro C314 - it's a carbon-fiber tripod that weighs 5lbs and is rated to handle up to 39.5 lbs. I use it with everything from my RB67 up to my 5x12 and whole plate cameras (6.5x8.5). I've never tried my 14x17 on it because I know it will wiggle (the fault of the head, not the legs... it wiggles even on my Inka studio stand), but it will bear the weight of the 14x17. They're not cheap, but they're a good couple hundred less than an equivalent Gitzo.
Same setup here except the C114 series which I use with a M7II and a Graphic 4x5 with no issues. Total out the door with ballhead was around $350 from KEH