00:01:427 - 00:04:864 you could easily avoid the "Avoid using more than 5 consecutive 1/2 notes"-rule by removing the 4th note in every pattern (so you have basically 3 1/2 notes, short space, and another 3 1/2 notes) like this http://osu.ppy.sh/ss/16752949/3311
00:51:427 - 00:57:364 : same here (though I would follow 1/1 here only)
02:07:755 (127755|3,128197|0) - The end of the LN and the other not is not snapped to 1/4. All objects need to be snapped properly for ranked