a .260 should be great
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i have a 7mm-08 and like it extremely well also.
are ya sure ya want a muzzle brake? they do reduce recoil considerably, but noise level will increase significantly also. my 15" 7-08 does not have a brake, and i find it easy to shoot. still.....if ya want even less recoil, a brake should do the job.
you can get a full custom barrel from OTT(on target technologies) in stainless. mike can also add a muzzle brake to your barrel.
http://www.mbmco.net/Merchant2/merchant.mv?Screen=SFNT&Store_Code=OTTthere are so many good options to go with in scopes and mounts, it is really hard to pin one down without knowing exactly what you want to do with it, or pay for it.
as for a scope, a burris 2x7, or 3x12 ler scope are my favorites, and is what i get if i can find the $. if no $........then a 2x6 bushnell trophy, or 2.5x8 weaver will suffice.
as for a mount, i like a redfield 3 ring mount that is lapped true......or burris signature dual dovetail base/rings...........or a weaver base with 3 burris zee rings, or 3 leupold vertical split rings.
i believe mid-south shooter supply is a board sponsor. order a catalog from there, or midwayusa. look thru them, or even the web sites to get ideas on what you want . i find it easier to study the catalog for such tasks. :lol: