Upgrading

I currently have a Sony Cyber Shot DSC-HX1 (2009, 9.1 megapixel, 20x optical zoom, 1440x1080p anamorphic HD Video Recording) that I purchased after graduating high school. I love taking pictures, mostly of family (dogs included) and landscapes/nature. I also do family portraits for friends, but nothing professional. I decided to get a “super zoom” camera because my dad is involved with hydro boat racing and I needed something that could zoom across a small lake. I want to further my photography skills and get better quality photos. I would like something with manual focusing, improved auto focusing, and smooth video recording capabilities. I also want a camera that can use external flashes for low light situations. Being able to take great photos is a must but I also need something that can handle video because I don’t have a camcorder. I would love to be able to hang up large prints in my home of my own work. I also love the digital graphics side to photography and working in Photoshop and Lightroom to give my photos that finishing touch. I have always been interested in DSLR cameras but the price was more than I could afford and I would never be able to purchase all the great lenses. I have recently become interested in the mirrorless cameras. I have been saving up for a new camera but I’m not sure what to buy. I was thinking about the Nikon D5200 or Canon T4i but would not be able to afford any extra lenses or attachments for while. I was also worried about the video quality for these 2 cameras. I also like the Lumix G5. With all of that said, what kind of camera do you think is right for me?