that will four more years. and u dont know u will get nursing seat or not. getting admission is very easy. they will enroll u but getting into right degree is not that easy. again it will depend upon colleges. some has plenty of nursing seats available and in some u have be in waiting list. but after doing nursing from Nepal, starting whole course over again doesn't make any sense. give couple of nursing tests and get the license and wait till visa get available. but most imp thing is schedule a visas which is unavailable right now.