Best practice for setting up networking in Proxmox

Hello,

I've got an upcoming project where I need the following setup. I would appreciate your thoughts on this and what would be the "best practice".

Requirement:
I have 4 interfaces divided in 2 bonds.
There will be a mixture of KVM and CT. Each virtual server will need access to both client and storage network.
One of the bonds needs 802.3ad (LACP) and VLAN tag as this will be used for separate storage network.

Issues:
1. multiple gateways, one for client one for storage
GUI doesn't appear to allow for multiple gateways (I don't need two default gateways), although there is no issue in setting this up via CLI
Is this the correct approach however? Perhaps these two gateways should not be setup on the host?

2. VLAN on a bond
How do you set this up? Does VLAN tagging work only on an interface, for example bond1 containing eth2.10 eth3.10 and not bond1.10?
This link for VLAN wiki or this one Network model isn't very clear to me (sorry).

Thank you.