For God’s sake please don’t expect to turn over 4 out of 7 every week, because you won’t. I can have 20 & can sell sweet f.a. in a week. Also out of about 20 I can have in 7 waiting (from the block, valeters, MOT, specialist, mechanic etc. etc.). My guess is you’ve yet to be caught by a couple of shitters & had a few four figure financial hits - when you do (and you will!) & still want to do this then you know you’re cut out for the job.
You sound like you’ve put some thought into this and you’re starting from a similar point to me about 15 years ago. My advice to anyone thinking of packing up a job would be to get a couple of years really learning this job (auction trends & the general public are the main points) and make sure you can at least earn a wage. I was fortunate in that I’d accrued a pot of money & didn’t have much of a mortgage. I don’t know your personal circumstances (and they’re none of my business) but how much money you have in the bank, family commitments & how much, if any, debt you carry would influence my decision because I’d hate to see someone new to any business struggle & end up homeless.
After saying all that I wouldn’t go back to being a PAYE man & there is money to be made if you’re prepared to work. One final thing, don’t believe all of the Billy Bullshitters you’re going to meet in this game.
Good luck!