Small DC design

Hi everyone!

I'm designing a small DC for 2 racks with an opportunity to scale. This scheme is used Cisco devices. Two Nexus9K as distribution switches with N2K FEX switches on access layer. End servers use LACP for a connection into FEXes. N9K use VPC for multi-device LACP supporting. Routers ASR1K use HSRP for vlan gateways and VRFs to separate tenant's vlans. ASRs get default route from ISPs through eBGP and use iBGP for ISP active/passive redundancy. Active HSRP ASR checks Internet connectivity by IP SLA and change HSRP priority in case Internet resource is unreachable.

​

DC topology: https://ibb.co/D7Vywk9

​

1. What changes can you suggest to my scheme?
2. Is there a reason to change HSRP gateways from ASR to N9K to increase bandwidth for East-West traffic? How to organise ISP redundancy in that case?
3. Is there a reason to connect ISP links into N9K and terminate in ASR instead of direct connect with ASR?
4. How to orginise ISP redundancy when both ISP provide connection links to both ASRs?
5. What equivalent Juniper devices should I use instead N9Ks and FEXs? I've considered QFX10002 with Fusion technology, but QFX10002 cost is much higher than N9K.

Thanks for your answers!