Well, the best plan is to amass your first 500 clickable, searchable videos within about five years. According to the latest data, there is strong link between the number of videos a channel uploads and the number of subscribers that generates, assuming the videos are of a clickable, searchable quality that captures and holds people's attention, causing them to take action.
For instance, as I understand, for average channels that have 418 uploads typically have 10k to 100k subscribers. I say round that up to 500 to make the math easy:
3 video per week * 50 weeks per year = 150 videos per year (Take Christmas and New Year's off, then get back to work.)