I won't keep it, but I noticed on the 2145 plant that there is already a female flower on the main vine. That is a somewhat good sign. Means the plant is kicking into gear and sometimes it means it is a plant that will throw a fair number of females. That is a good thing, because at 10-14 feet from the stump you want a female(s) to appear when the plant has gotten sufficient in size/mass to start growing a pumpkin. It is kind of frustrating when a plant doesn't produce many females.
I once had a plant have a female at 8-9 feet. I foolishly took it off. Next female didn't show up until about 20 feet. The pollination took and was growing really well, but I had to take it off because the pumpkin was badly male formed. A segment did form correctly and the pumpkin would have definitely split. It was another 5-6 until the next female showed up and at that point I was way to late into the season. Lots of female flowers means lots of pollination opportunities.