The Talley mounts (which is who makes the Wby brand as well) are pretty sweet on this rifle). Otherwise, any mounts that will fit a Rem 700 or Howa 1500 will fit the VGII's.
You can use the low mounts upto about a 44mm objective. I have low mounts on my VGII with a Redfield Revenge 3-9x42mm, with flip up caps and there is just a hair of light visible between the front cap and the barrel.
These mounts are the base/ring all in one and are reasonably priced at 50 bucks for the set (yes a little more than say weaver bases/rings but good solid mounts for a rifle "guaranteed" to shoot MOA.
I picked up the scope from Prophet river (on sale) along with the mounts for just under 300 bucks shipped and find that combo to be "reasonable" on this rifle - I didn't want glass costing as much as the rifle sitting on top and the Redfields, owned by Leupold as their lower cost offering, has been working fine for me.
BUT, I don't shoot into the last seconds of legal light and when hunting I usually don't shoot past 100 yards (never had to at least). I did get the accu-range reticle and have horsed around with it a bit and it does work well out to 400 yards (furthest I could find to shoot), but the reticle is kinda busy (I was going to get the standard reticle but the "fancy one" was on sale).
Personally I wouldn't get the packaged deal - the price is good but the Kryptek is a way cooler looking rifle.
Mine is the (regular) grey with black insert synthetic and I like it just fine, but if the Kryptek had of been available I would have gone with that (at least with a hunting rifle you look at it far more than you shoot it - so "looking cool" counts)
Other scopes I considered for the Vanguard II were the Nikon Prostaff and the Busnell Legend (both in 3-9x40) as well as the Redfield Revolution (just a little different than the Revenge series), because I wanted to keep the cost of "mounted" optics at about half the sticker price of the rifle.
If you are looking at keeping the weight down, maybe find the lightest scope you can. The Vanguard II's are "heavy" just by themselves. With my scope/ring setup and the magazine full the rifle tips the scales just a hair shy of 9 full pounds - so not a "lightweight" by any means.