I agree with what Randy said regarding gpus. It would also be nice to know what kinda price range u want. If $ is no object, get a titan, doubt miners are snapping those up. I'd personally wait a little, see what the 2070 and 2080 bring to the table, and if gpus start to drop in price. As for a display? High refresh rate. I personally use an Asus ROG Swift PG279Q, which is a 27 inch 1440p 165hz refresh rate monitor. The most important part is high refresh, as I said. Idk if i could do anything less than like, 100-120 minimum