Hello Sarah, thanks for your message. (n__n)
1. Yes, we can change the length for you, please write it in remark box (in order form), and our tailor will adjust it for you. n_n*Remark message like 'I want a longer skirt, from waist to skirt end: xxcm.'
2. Yes, if you order it now (about 3 weeks making costume time) and use the faster shipping method (Express, 7~15 days shipping time), it will reach you around early October.
*All shipping information (including methods, cost & estimated delivered date) will be shown in order page, before payment; you can pay extra cost to upgrade shipping method there.
*Please remember to mark down the date (you need it) in the order form when you order it. :)