most of the reading i did on this was a little dated so i want to get some clarification here. im working on a 2 minute video and am planning to upload it 20-30 different times, and another 30 times on a second channel to target each different keyword. these kw's get from 10k-600k exact searches but have .10 cpc so its very low competition and ive already ranked on the first page for a 90k exact kw pretty easily for my first test video. this will all be done on a brand new channel. there will be about 5 seconds in the beginning where the video will be different for each kw and the rest of it will be the exact same. this means ill be editing and re-saving each one of coarse. if i do this, change each length by a few tenths of a second, and change the file name, will they be safe or is there anything else i should do?