Hello i wanted a bit of advice i am looking to get a new monitor and had my eyes on ASUS ROG Swift PG279Q Gaming Monitor - 27'' 2K WQHD (2560 x 1440) IPS for aproxx £710, however if i were to purchase another asus gtx1070 (sli) and get this monitor Acer Predator XB281HK 28inch 4k Gaming Monitor this will in total cost me £908 in total with the gpu, any thoughts on witch would be the best option?