Will the 6'10" MHXF crucial be good for large worms(10")? I would love to have a 6'10" fast but they dont make one in these.How about a 6'10" Falcon Cara?

The Cara won 't be extra fast.

I have this rod but sad to say it has seen very little use because I got caught on a drop shot fix.   :   It should however be quite good for any jig and worm set up you want to toss that is within its lure weight range. The rod is very sensitive in my hands.  It will definitely get more usage next season. 8-)

My Texas Rig rod is a Shimano Crucial CRC-X610MH; I throw 10 worms/6 Gene Larew Salty Hawg Craws & I simply love it

Will the 6'10" MHXF crucial be good for large worms?

For most people it's a great rod for that application.