I am dreaming of Oxford (if they take me...) for the MSt in medieval history and/or medieval studies, but I've spoken to medievalists and the impression I've received is that in the UK, Oxford and York are the move for masters programs in things medieval (not to remotely put down other programs- I am applying to others and they look equally fantastic).That being said, since you're being given the chance, I would definitely try and make it work out financially. Luckily, you have a chance for funding (April) and if you're from the US, federal student loans can be taken out for school in the UK.
(Also, to piggyback, would anyone accepted be willing to share their stats? I am still waiting to hear back which is absolutely nerve-wrecking. Freaked out because some people have heard (rejections and acceptances) from the program already. What does this mean....?)
Also, congrats!!