Decisions, Decisions

I've got a couple of gardening quandaries that I'm working on right now. Maybe some of y'all can hook me up with some advice?

1. My winter composting consists pretty much of me chucking bits of kitchen waste out the backdoor. (A method that Will simply ADORES.) Sometime in January, I realized this was not very efficient, so I went outside and hacked some of the larger bits of kitchen waste into smaller bits to ensure better breaking down. A few of the bits were actually whole mini-pumpkins given to the kids by my mother-in-law at Halloween. They hadn't broken down at all, probably because of the coating of waxy stuff used to preserve the painted on faces that decorated them. I chopped them into pieces, noting in passing that they sure were full of seeds to be so small. Can you see where this is going? The fruit of the pumpkins broke down beautifully, but I am now the proud owner of at least ten mini-pumpkin seedlings, with more popping up every day. Some research shows them to be edible and full of uses, from the aforementioned painted on pumpkin doohickeys to autumnal candle holders. BUT--I can't use ten vines...I'm not even sure if I could find room for two or three. I have considered potting them individually and trying to sell them at the Farmer's Market. Or maybe using them as a vine in the as-yet-to-be-decided front flower bed. I love the IDEA of mini-pumpkins and think that they could be a good cash crop, but I'm not up for an entire garden of them. What do y'all think?
2. My winter-sown heirloom white scalloped squash is rapidly outgrowing it's container. I've got EIGHT (because I'm a nut) plants that are growing like gang-busters and which really need to be transplanted soon. However, squash is notorious for being difficult to transplant and I really want to baby these guys. Tomorrow is the last date for average spring frosts in my area, but the temperatures are expected to fall to the upper thirties on Saturday night. I really want to get my watering system in soon, which would be best done if the plants are in. Ackk!!
3. Also in the self-seeding category are a whole menagerie of tomatoes: Romas and Better Boys. Below is a wad of Roma seedlings.Daddy has asked for a few of them, but I might be able to get as many as twenty out of all the little seedlings. I've winter-sown both varieties--as well as Cherokee Purple and Jelly Bean, so I'm pretty sure that I'm not going to need any more tomatoes. Should I just chunk them in the compost? Try to sell them at the Farmer's Market?
   

The biggest issue here is that I HATE to waste plants and money, so when I lose a plant or can't use one, it makes me nuts. What would YOU do?