i5 - for light to medium video edditing
i7- serious video edditing while using other task
dedicated graphics card of any sort for your gaming- but that maight be out of budget
Stay away from touch screen to save you money. you also wont get a large screen.
If possible get your OS on an SSD with space for needed apps, the speed is immense.
Not a huge fan of HP but after a quick look I would go with this
http
/www.newegg.com/Product/Product.aspx?Item=N82E16834266056
If you need more storage external hard drives are cheap for stuff like photos and files not needed imediately.
Also sales change on the daily