Hi Lumone,
Good to see that you did your homework regarding B-school application. Your choice of schools is excellent, but maybe you should also consider other arguments:
HSG St. Gallen is a very famous school in Europe comparable to LSE, BUT its MBA programme is not very well-known outside of Switzerland. Even in Switzerland, IMD is much more respected by recruiters than other European MBA programmes.
Oxbridge is excellent and a true rival to LBS, although I think that both schools benefit from their old school tradition. In my opinion LBS is still the best school for finance and MC in Europe. Although LBS is very expensive, you have the chance to earn an impressive compensation during internships and business projects.
INSEAD is also an excellent school, but quite short with 10 months (so is IMD BTW). Therefore I did not apply to INSEAD. However, I would still prefer LBS to INSEAD, but this is only a personal preference.
For backup I would also consider Cranfield and Imperial College, if you want to work in UK or IESE / ESADE, if you don't mind being in Spain.
HEC is also excellent. Regarding HEC's exchange, there is unfortunately only a limited number of seats for LBS exchangers, sogetting into LBS will be quite competitive. On the other hand you can also apply for dual degree with LSE or NYU Stern, but this programme lasts nearly 21 months.
Good luck for your applications!
Cheers,
lumone
Thanks for the feedback.
I visited HEC and Insead last year. I might visit Oxbridge in October. R1 for Oxford is in late October so I may have time to visit before the deadline. Cambridge R1 deadline is before that, but it does not matter as I will apply there in R2.
Visiting St Gallen: definitly would take a campus interview if invited, but I don't think I'll visit before that. R1 deadline is in December, so I can focus on the other applications. I'll probably contact you in November. Let me know about your experience at St Gallen. I'd love to hear more about it from a student.

What I don't like about HEC: the MBA is not as well rated as the standard HEC programme. However, I may apply there as a back up and take advantage of the exchange programme (which takes place at the final term of the MBA) with LBS: avoid LBS tuition fee (HEC is much cheaper) , but benefit from the career service/location to find employment once there. Living 4 month in London wouldn't hurt my wallet that much.
Other possible back-ups: Trinity and Smurfit in Dublin. They are not as well ranked (gmat averages at +- 630 don't help), but I wouldn't mind staying in Ireland and there are probably good opportunities in Dublin for IM.
Thanks again
Lumone