I'd be interested in seeing how the Victa commercials work out for contractors. But I can't comment on them.
As for starting out with very little in the kitty, that's exactly what I had to do due to circumstances at that time. I'd only offer this advice, to get the best commercial quality equipment you can - as soon as you can, even if that means delaying starting a few weeks or a few months, especially now we're entering the slow time anyways.
If you're still keen on going low cost to begin, then put everything aside that you have from then on in order to upgrade to better quality commercial gear as soon as possible. Which means the extra grand on top of the $700 you're considering starting with for the mower alone. Tho this considerably increases costs during the start up phase of the first couple of years.
Which from my own experience is serious false economy - with major hassles at almost every step of the way, as well as extremely more expensive in equipment costs in rapid replacements.
I had no choice than to start as I did at the time, with very little $$. I made my way and quickly started raking in the $$, and its changed my life ever since for the better. But my biggest mistake that I would redo over every single time - was that I put that money from the first year or two into wages and not into better commercial equipment.
My biggest mistake when starting out, was not my advertising, or pricing, or business name, or insurance, or car or trailer, or being slow/inefficient at my work. It was poor quality gear that only lasted a few months to a year, that broke down regularly in between time, that did a poor quality job - and inefficiently - and with greater stress on the body.
Do whatever you have to do to make a start. It's worth it. No matter what.
As soon as you can, buy the good gear.
My experience. Food for thought Best of luck with the new venture !!