Why don't you run this past James B? He seems to have quite a bit o' knowledge, & he recently picked-out a 700 SPS for himself.
There's a whole 'nother debate about blued vs. stainless out there. I'm not sure one gains any accuracy with stainless, but I can't speak to what it does for a guns' resale value.
Your prices sound right along the lines of the guys I use:
http://www.budsgunshop.com/catalog/advanced_search_result.php?osCsid=69497b38396f222b 13730eaa2f07e5e4&keywords=700+sps&osCsid=6 9497b38396f222b13730eaa2f07e5e4
When you say that the guns are, "too short", do you mean that your trigger hand seems too close to your face? I suppose you could try to find a knowledgeable gun seller, & ask them which models have the longest length o' pull. Or, you could put on an aftermarket recoil pad that would take up some extra space.