I no longer do paid traffic so no info there (conversions were much better although placement was much worse than my organic) but I convert about 4% of my organic traffic to leads.What is considered steady traffic? 10 users a day, 100?
Also, how many users in average convert to a lead? Not specifically for your case but just in general
I contact a little over 40% of those, write a third of those, and place about 80%.
So every 1k visitors per month nets me 4-5 paid cases.
You can do the math on how much steady traffic you need.
Different lines/niches/etc. will have different results.