Aurora-R7, PSU and GPU upgrade question

I bought an Alienware Aurora R7 with 16gigs of ddr4, liquid cooled i7 8700, GTX 1080, 16 gigs intel optane, and a 2tb hdd. This PC came with a 460 watt PSU. 

Question 1: I bought an EVGA 750 P2 fully modular PSU. This PSU should work, correct? It has 2 cpu socket which will allow me to power GFX PWR. It is standard ATX.

Question 2: I preordered an EVGA RTX 2080 XC ultra gaming GPU. The dimensions are 10.6x4.5x2.4. Will this card fit? Also, it is an open air gpu opposed to blower style. Is the R7 case equipped to deal with an open air, dual fan card? 

Much thanks.