Well done bud...the fact that you are able to consistently open a lot of Sets is a great start and when you're happy with this you can start to move onto expanding the interactions. With regards to material - I think it is good to have some good canned stuff to fall back on, but it's like Openers and approaches: after a while of solid Opening you start to stop with canned lines and start using natural/ spontaneous Openers based on where you are of what someone is doing etc it's teh same when you're interacting Keep up the good work dude