As a DM,I wouldn't allow those scores unless I saw you roll them.That being said I now only use point buy because rolling almost always leads to cheating or feeling cheated(as the player).
That's typically what you end up with when you roll scores as well--only there's a small chance that you're stuck with a terminally dysfunctional character and a small chance that you get Supreme Cosmic Power that leaves the rest of the party feeling useless.
In the past, I've tried the following method: Everybody, including the GM, rolls an unordered set of stats (either 3d6, 2d6+6, 1D12+6 or 4d6-drop-lowest, depending on the degree of heroism desired) and writes it down. Then the results are tabulated. Finally, every player can pick the stat array of their choice. Usually this means everybody picks the same (best) array, but sometimes a player picks a more balanced array over one that has two 17s and a 7. Also, I warn the players that if we use this method, heroic-level NPCs such as major bosses and the like will get to pick from the same pool.
Honestly, though, point-buy is less hassle. Player stats have a pretty profound effect on the challenge level of the campaign. With rolled stats, a lucky party can steamroll your game with no trouble--or get clobbered by their first APL+1 encounter. With point-buy, you can fine-tune the points as desired for your campaign, and there will be far fewer surprises--leaving you to concentrate on things like "they have a gunslinger" or "they don't have any casters". So I only do the above method when we're feeling goofy.