ninjacookies00

Since multiple devices have problems on the same network, I'd suspect the router.
 
Can you get another router to test with? Maybe even one from friend?

If you're in the 970 budget range go for the r9 390 I believe that it performs better for around the same price.

I've been doing tech relating jobs since I was 13, but never taking a job too risky until I got more experience.
Building a PC from scratch means you will need a customer, willing to spend money, and take the whole responsibility. If you get scammed in the shop you are buying, if a component is DOA or fails shortly as the build is delivered, if the user regrets his choice or didn't know what he wanted at first and now is unhappy with your build, if you cannot ship the system safely, if you don't have means to deliver the PC, if you get robbed while walking with the system. Or even if you mess up something (it can happen to the best of us). You need to respond to these situations correctly, and if you don't have the investment founds, the knowledge, the experience or the ability to deal with all types of people, then you are screwed.
 
My advice, start with your own circles, relatives, friends, relatives' friends, friends' relatives, and do some PC repairing, formating, maintenance, fix damaged peripherals, help them get out of viruses and malware. And if some of them want a new PC or an upgrade, help them with their choices and budgets, and build it for them. You will learn and spread word around about your work, getting experience and a reputation.