Welcome Little Mick,
A previous post
had some opinions on using Oregon Fruit Puree. The one I used in the primary did not have the most powerful peach flavor, so I actually racked onto whole peach pieces in the secondary. This seems to be the common oppinion amongst those who have used these cans.
Dumping the two cans into the secondary and racking onto them should not cause any problems. Give it a go and post the results up in the Brewlog. Are you thinking of using one can per 5 gallon batch, or using both cans in one 5 gallon batch and leaving the other as a straight Mead?