Moving toilet

[Ola7mat]

Hello, looking for some advice before pursuing any further... we have an toilet on the 1st floor kind of in the middle of the house. Would like to move the toilet which would require extending the soil pipe by 1.7m and to turn the toilet would require 3x90 bends, 1xvertical and 2x horizontal.
I attach a crude drawing I did on my phone (apologies for poor quality).

Any advice or guidance would be appreciated?

 

[blup]

There are a few extra bends in the soil pipe and cutting the joist will create problems as well. I would address both by putting the new wc back to the side wall and linking up to the existing soil waste using flexible adapters

 

[denso13]

It should work ok, but will technically be over the 6m limit. Will you get enough fall below the floor?

 

[Old Salt]

Why not go through the back wall and run a new soil pipe externally to linkup to existing and get as much fall as you need.