Re: price check
With the muzzle brake and the weight of the sendero it would recoil less than the others provided they were sporter weight you mentioned. If it truly has been bedded, has a good trigger job and a quality brake, it would be worth 1000-1200 buck to most shooters in the market for that rifle with those mods.
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.