Hi,
Theoretically speaking, the S5730-HI provides the integrated WLAN AC function that can manage 1,000 APs, reducing the costs of purchasing additional WLAN AC hardware. But given the practical deployment scenario, if you have this much access points, go with a dedicated Access Controller (either in a separate box or as a line card in modular core switches). As, management scalability that controller can give you, won't be possible with the access switch.