Replying to Buying my first dslr and accesories

So i know ive posted 1 or 2 threads about this but this time im serious haha. Im going to pick up a canon t5i and an 18 to 55 mm lens. gonna hold off on the fish eye until i get some practice with the kit lens. Any more lens recommendations? Would you recommend 32 or 64 GB sd card as i would use it for videos. Also is there a way to store footage on a portable back up system? like a portable 1 terabyte box? in addition i will be purchasing a camera bag. I already have a tripod. Made a few gopro edits this year and its time to upgrade. Any other start off gear recommendations or suggestions?