Agreed...we have done many times. Just carefully check your rc and hosts files...but in your case the same ifgrp name so just the ifgrp create changes in rc only so even easier. You can also edit the rc file before you takeover the node or after takeover since processed on boot or giveback.
Do you have a single 10GbE card though? If a single card, you might want to configure negotiated failover (NFO) in the rare event of card or pci failure so that the node fails over. Right now a card failure would leave your single e0a or 4 ports on e4a-d running (degraded but running). You could also setup a second level ifgrp with a single 10GbE port primary, then a secondary of the 4-5 gigabit ports. If you have 2 10GbE NICs then you likely wouldn't do this...but we did for another customer so the 10GbE single port failed over internally to a quad gigabit ifgrp (single-mode ifgrp with 10GbE favored and gigabit lacp ifgrp not favored).
I am upgrading a Netapp 7 mode from 1GB to 10GB. Currently the VIF has 4 ports "e0a-e0d". Will be adding 2 new 10gb dual port cards. I want to retain the same name and IP address. Appreciate if you could give me the steps.