Looking forward to this answer, that way I don't have to ask. I tried my 3-12 Hours vision HAWK on my striker yesterday. It does not have a lot of eye relief and I found it very awkward mostly due to my trigger I believe. I see the only option as being a rear grip stock for this pistol and a new trigger.
When I use the Bushnell pistol scope I have for the pistol, I find that the trigger is a little more manageable due to the angle of my hands.
I think when funds allow for me op I will switch to a Leupold scope. But we should both listen to Ernie on this one.
I would not go to a rifle scope with no brake.
The Burris 3-12 LER with either BP reticle or target turrets.
I used to buy mine with BP reticle and then send it in for the target turrets to be added.
If you use the Burris Signature Zee rings you can also build some MOA in in your rings if you don't have a sloped base.
With a re-barrel later your options really open up.
The 260 with a good brake (I like Holland's Gen 2 Radial the best) will make the recoil all but nothing and the kids will enjoy it.
If it is not going to be a mtn carry rig you might get a heavier taper also, but you will have to open your barrel channel on your forend.
The 6.5x47 Lapua would also be a great choice, and in a 15" barrel you will get close to the same performance from it as you will with the 260 Rem
I concur with Ernie's suggestions for optics. Although most of the lower powered optics are great really, they can't be cranked above 8x.
I had a McGowen screwed onto my Sav. Super Striker, and the diameter required me to remove a lot of wood from the barrel channel. Watch the lug nut as mine bottomed out in it's recess and the gun was very inaccurate until my gunsmith shortened it.