Removing canes from new Clematis?

I bought a new Clematis Montana yesterday and have planted it to grow up and over a metal arch in the garden. But I’m not sure if I should remove the tripod of canes and plastic ties?
With previous clematis I have bought I have left the canes for a year or so but they had a lot less growth on, this clematis is quite bushy and I wonder if it would benefit from being ‘untangled’ and tied in to the metal trellis?

 

Yes remove them and set it free.
Then you can train it over your trellis.

 

Thanks @Pete8 I shall set it free tomorrow