FIrst, congratulations!
It seems like you are more familiar with Cambridge. And here I can talk about something I know about Scripps.
1) Funding. After first-year rotation, you will formally go to a specific lab, and PI will support you for the last few years. I also overheard something about Scripps was losing money. But as I know, Scripps Florida, unlike its headquarter, is a young place and partly sponsored by Palm Beach County, so maybe this place is more promising.
2) Reputation. Scripps is not as famous as Cambridge. It is only known by people in the biological field. From my perspective, maybe because Scripps is not a university or a college, and it's not on some ranks like US News, QS. etc. But it's indeed a top-notched research institute.
3) Research Topic. I also like what people do in Scripps Florida! They are really creative and promising.
4) Location. Jupiter is a really small but safe town. There are orange sunshine and super beautiful beaches!!! And it's an excellent place to help you focus on your research. But there are not many social activities or parties. So maybe it's a little bit boring.
So where you decide to go depends on where you like!