Your people are good at making clothes, but back in the sweatshop, all they did was make the clothes. Now they're responsible for selling them as well, and that's where you're having trouble, I think.
You might try pulling a couple of them off of T-shirt duty -- you're obviously not selling enough T-shirts at a high enough price to justify the amount of shirts that you're making. This could mean that your people are making crappy shirts that nobody wants to pay for, or it could mean that there's just not enough demand for tie-dye shirts to support all six of them working on it, and they're either not selling everything they're making, or they're being forced to drop their prices heavily.
In your case, while your new recruits have good skills in making shirts, they probably have zero skill in business, so aren't skilled at the art of hawking the shirts they're making. I would suggest drawing your shirt workforce down to your one best skilled person, and letting that person continue practicing. You'll lose less money as they get into it, and that person will have less competition from other LCS shirt makers, so might be able to sell at a higher price. Eventually, they should start turning a profit. If you want to go with T-shirts for all six, start slowly phasing them in one at a time, letting each one train at a loss while the already trained ones are making a profit.
Alternatively, you could take some of them (with high heart, hopefully) and set them to play music in public. Note they'll make much more money with this if you go to the pawnshop and get guitars from the tools menu, but guitars are only $200, and are a one-time expense. Street busking won't make the big bucks early on, especially since they probably have no skills in music and sound like crap, but getting them out there to play costs nothing and they'll eventually learn.
Asking for donations won't get you a lot of money, but it's dirt cheap. You'll want to have society not super conservative, and you'll want the LCS to be well-known and respected, otherwise you won't get many people willing to donate. One thing you'll want to make sure of is that you get them some nice clothes when you get the chance. A cheap suit from the department store downtown will do a lot to make them look more responsible and will help them to get more people to donate.