Without buying the first office building and open a company you will be hardly breach through the 1 star reputation, so it's advised to open it as possible as you can afford. After that you need income to upkeep so you should do something for it, practically put girls on camshow. With your company behind more work orders appears, like the 'models required' types, but you don't need a photostudio to do this works. But without advertising what you do your progress will be deadly slow. For me to reach this point takes 9 month, so I started my company at september. This is the time when rival pornstars contracts starting to expire and falling in the freelancer pool. So this is great opportunity to harvest a lot of money with putting them instantly on camshows. Camgirls quality and fame, and your advertising determine they income what can earn. But already famous pornstars earn a lot more on camming (more than you can earn any activity in this point), so they provide a high kickstart in this way. You should check recently the freelancers pool if you hasn't afford to get a pa to 'your right hand' position.
IMO it's a good strategy to wait this contract expired pornstars appearing, what is starting roughly in september (in 9th month) and go through the year (to the end of 12th month). (Because the rivals cannot sign contracts longer than 12 months either). If you has enough money try tap them with a short range non-porn contract to stay longer (it's worth it). If you settled all things above you could start chasing specgirls to go in to your business too.
Also don't bother too much that bar (camshow quality), I think it's impossible to reach 100%, maybe it's required pure lvl10 girls to achieve. (my bar never goes upper than 75-80%)