Antennas will be mounted outdoors. Make sure your equipment are properly protected from electrical surges. Distance wise, 1.7km there won't be much loss but due to the fact you're in a residential area and I see factories, there will be interference. Your required speed is 1 MBps (8 Mbps) so even with bandwidth degradation of 50% on a 54 Mbps antenna, you still have sufficient bandwidth.

If you're serious on establishing a stable link you'll need to spend upwards of RM 3000 per pair of antenna (this is excluding workmanship, cabling, bracket etc)

If you want peace of mind, my advice is to stay away from brands such as D-link, tp-link or brands that mass market for home users for point to point antenna.

Look for products from these manufactures for P-to-P:
Ubnt, Ruckus, Aruba
Heard good things about Mircrotik but can't comment cause I've never used it before.

Wireless Manufacturer Products that I've used before:
D-link, Tp-link, Senao, Linksys, Engenius, Cisco, Infinet, Ubnt, MTI; probably some more which I forgot the brand and not worth mentioning.

Cheers.