Definitely, if you are doing to 1000 flyers a week that’s some going, and agree you are doing great my friend just keep hacking away at it. I could still do more now, I guess a full round can mean different things to different people, depends how many days you want to work, time you want to finish etc.
I work six days 8 - 6 and take Sunday off, even then I have one or two I do an odd Sunday. If I have a bad day, snowed in etc and try and catch up on Sundays but that’s a last resort.
You know I guess the good definition of a full round.... is when you have to take on extra help you do it, not want to for the free time but need to. So for that, and to finally answer your thread, I think a year maybe two depending on your situation and commitments.