No! You should go with what you find!
I don’t mean to be rude by saying that. It’s just good solid advice. You’ll be a lot better served in the long run by using different types of guns and equipment. It will give you a better feel for which type of loadout that suits your playstyle best. You will do just fine with regular gear in NVHM and TVHM.
If you feel that your gear doesn’t quite cut it, you could always use Golden keys on the chest in Sanctuary to give it a boost. The items recommended in the Axton section become more helpful as you get into UVHM and OP levels.
The builds there are endgame builds, and you may have different needs in the early stages. Learn more about each skill, and try out some different builds on your own to see what YOU like, and if you have problems or questions about it… Post here, and I guarantee you’ll get all the help you need.