Adding a VM into our phone network

We have a legacy pbx network with a PBX & polycom phones sitting on a set of 5 L2 switches. All five L2 switches terminate to a L3 HP2610-24-PWR which (using routing) is connected to our data L3 switches (10.10.10.0/23) using 10.10.10.19:

hostname "2610-24-PWR-1" ip default-gateway 10.10.10.1 ip routing vlan 1 name "VoiceNet" untagged 1-25,27-28 ip address 192.168.2.1 255.255.255.0 ip helper-address 10.10.10.10 ip helper-address 10.10.10.11 tagged 26 voice exit vlan 2 name "DataNet" untagged 26 ip address 10.10.10.19 255.255.254.0 exit ip route 0.0.0.0 0.0.0.0 10.10.10.1 sntp unicast sntp server 10.10.10.10 

Our current 10.10.10.0/23 network currently has just a route to the 192.168.2.0/24 network:

ip route 192.168.2.0 255.255.255.0 10.10.10.19 

I was proposing the following change to bring this environment into our L3 data switches so we could also tag switch ports for our hypervisors:

L3 data switch:

vlan 1921 name "Phone Network" tagged 1/27 (to L3 Phone switch) ip address 192.168.2.1 255.255.255.0 ip helper-address 10.10.10.10 ip helper-address 10.10.10.11 exit 

L3 phone switch:

no ip default-gateway 10.10.10.1 ip default-gateway 192.168.2.1 no ip routing vlan 1 name "VoiceNet" untagged 1-25,27-28 no ip address 192.168.2.1 255.255.255.0 ip address 192.168.2.9 255.255.255.0 ip helper-address 10.10.10.10 ip helper-address 10.10.10.11 tagged 26 (to L3 Data Network switch) voice exit no vlan 2 

All other L2 phone switches look similar to this already, which I was hoping not to change if it's possible:

ip default-gateway 192.168.2.1 vlan 1 name "VoiceNet" untagged 1-28 ip address 192.168.2.x 255.255.255.0 voice exit vlan 2 name "DataNet" exit 

I would like to bring the gateway 192.168.2.1 back to the L3 data switch so I can virtualize the phone system & without altering any settings on the L2 Phone switches.

Would my proposed changes work or is the vlan tagging between the L3 data and L3 phone switches wrong? Do I just drop VLAN 1 and change it to VLAN 1921?