Hello!
I will answer your questions in the same order you asked them:
1. The HTTP upload limit here is 8MB, via FTP however there is no limit;
2. We have a very strict anti-fraud policy so my advise is to
open a ticket and explain in the ticket that someone else will be paying for the upgrade so that we don't cancel the payment because of a discrepancy between your details and the ones of the person paying for the upgrade. We may also need to contact the credit card holder by phone just to verify that he has authorized the payment;
3. All kind of file extensions are allowed. The only restriction that we have is that we don't allow .exe files but this is only for the free plan anyway.
The servers are pretty fast, I don't think that this would be a problem
I hope this answers all your questions, if not, please don't hesitate to ask.
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Cheers,
Steve
Support Team Supervisor
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please read the F.A.Q.