Pullup bar/homemade suspension trainer

I am going to make a suspension trainer from the following parts:

http://ift.tt/2dx7Q0d

http://ift.tt/2ddjAJY

Will I need anything else or will these do the job?
Will the components be strong enough?

I’m also thinking of purchasing this pullup bar:
http://ift.tt/2ddkmXe

I’ll also anchor the suspension trainer from it?
Any others I could consider from Uk/Irish websites?
Also do I need to make sure a wall mounted pullup bar has enough clearance from the wall to perform inverted rows/pushups/jackknife pullups?

Pullup bar/homemade suspension trainer