I'd say:

Make sure you have clear goals for the team and start with realistic expectations.

What do you want to do with this group?
What can/can't you do with this group?

Just make sure you don't have a starry-eyed view of what it will/won't be. It's a plunge to 10-box, so make sure you start it with the right expectations and intentions.


Suvega and I have both theorycrafted about 10-boxing, but in the end we thought... "what for?" -- In our particular case, just our two groups can fill a 10-man, and with the growing number of multiboxers on our server it's likely we will have enough to fill a 25-man. Recently there's been some headbutting on "which multiboxer gets to bring their full group to ZA/Kara and which has to solobox this time??" -- so a larger team is not exactly a benefit to us.