Tuition and lodging at UCL works out at around $55-60k a year at current exchange rates, then there’s food, air fare etc. Is this your budget for other colleges too? Not wanting to get too into the weeds but that’s hard to reconcile with being a low income student. Bear in mind that US meet needs schools use their definition of need. If your family financials tally with $60k to spend on college a year you might not get the aid you’re expecting.
I think your achievements are impressive and you’re a strong candidate. That said, your list is all reaches. You’ll probably get some admits out of there but we also see sometimes very strong candidates get closed out of everywhere they apply when they have a reach-heavy list. I strongly urge you to add a couple of targets and safeties to your list unless you are treating UCL as your sure thing and know for certain it’s within your budget.