How should I configure /etc/network/interface to make Proxmox node use an iface trunk?

Question

On a proxmox node I have the current /etc/network/interfaces file:

auto lo
iface lo inet loopback

iface eno1 inet manual

iface eno2 inet manual

iface eno3 inet manual

iface eno4 inet manual

auto vmbr1
iface vmbr1 inet dhcp
    bridge-ports eno1
    bridge-stp off
    bridge-fd 0
    bridge-pvid 1
#Connected to switch's access port tagged with vlan 100

auto vmbr2
iface vmbr2 inet manual
    bridge-ports eno2
    bridge-stp off
    bridge-fd 0
    bridge-vlan-aware yes
    bridge-vids 1 100 <bunch of vlans here>
#Trunk

auto vmbr3
iface vmbr3 inet manual
    bridge-ports eno3
    bridge-stp off
    bridge-fd 0
    bridge-vlan-aware yes
    bridge-vids <other vlans here>
#other trunk

As you can see:

• vmbr1 is a bridge on eno1 interface which is connected to a switch's access port and tagged with vlan 100. It gets an IP through DHCP, this is the IP of the Proxmox node.
• vmbr2 is a bridge on eno2 interface which is connected to the same switch's to a trunk port. Among other vlans, this trunk carries vlan 100 as well.
• vmbr3 is a bridge on eno3 interface which is connected to another switch.

eno3 and eno4 are 10 GBbps ethernet interfaces and they are getting extremely hot. As I don't need 10GBps, in order to lower the power consumption and overall temperature, I would like to:

• make vmbr1 use eno2 interface (as the trunk already carries vlan 100)
• make vmbr3 use eno1 interface (in order to free the eno3 10Gbps interface)
• disable eno3 and eno4 interfaces (using a motherboard jumper)
• remove cable which was initially connected to eno1
• plug cable which was initially connected to eno3 into eno1

As I'm not used to /etc/network/interfaces file configuration, and as this involves the interface providing to the proxmox node, I do not want to mess things up...

Could you please confirm that this is feasible (or if does not make sense and thus I should rather try to find another solution) and that the following configuration is correct (and correct it if it is not) ? it would be a great help.

auto lo
iface lo inet loopback

iface eno1 inet manual

iface eno2 inet manual

auto vmbr1
iface vmbr1 inet dhcp
    bridge-ports eno2
    bridge-stp off
    bridge-fd 0
    bridge-vlan-aware yes
    bridge-vids 1 100
#Previously connected to switch's access port tagged with vlan 100 using the trunk

auto vmbr2
iface vmbr2 inet manual
    bridge-ports eno2
    bridge-stp off
    bridge-fd 0
    bridge-vlan-aware yes
    bridge-vids 1 100 <bunch of vlans here>
#Trunk

auto vmbr3
iface vmbr3 inet manual
    bridge-ports eno1
    bridge-stp off
    bridge-fd 0
    bridge-vlan-aware yes
    bridge-vids <other vlans here>
#Another trunk