Any prospect that low on that list will have a 45 FV, at best. I think they probably take quite a bit away from that for being a RP. I would imagine their best RP prospect is probably a 50 FV.
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According to this:
http://www.fangraphs.com/blogs/scout...couting-scale/
A 45 FV is a "Low Setup" or #5 starter. I would be pretty disappointed if Minter didn't end up as at least a "Low Closer, High Setup", which is a FV of 50.
I would have him safely in the Braves top 20 personally, easily ahead of guys like Whalen, Gant, Ellis, Seymour, Hebert, Davidson, Morris, and Bird, but behind guys like Acuna and Sims.