I havn't stayed there, but I checked out the site & package prices. I think they're very expensive considering what they're offering & their location.
With such young children it would be much easier staying right on the beach & organizing surf lessons separately which isn't a problem up along that stretch of coast. You'll probably only need a couple of lessons for pointers & then it will just be a matter of practice.
I'd recommend the hotel below for $75 a night, right on the beach. Take that other places phone number for your own comfort in case you feel your having trouble finding a surf coach. But all you'll need to do is go for a walk along the beach & look for a bunch of boards standing in a rack & walk up to it & start haggling.
Tell them you want a couple of lessons & a few hours each day. 50,000 RP ($5au) per hour should be heaps for the board rental. I don't know about surf coaching, but I'd talk to a few people, even guys working in the hotel are more than likely to have a friend they can call for you.
But yeah you can get your missus to take pics/vids & you'll be a lot free'er to come & go at your convenience, rather than pre planned ventures down to the beach with that other joint.
Just make sure you don't leave anything unguarded on the beach. But if your already staying on the beach you shouldn't need to...hava good one
www.tripadvisor.com/Hotel_Review-g311298-d636133-Reviews-Legong_Keraton_Beach_Hotel-Canggu_North_Kuta_Bali.html