Withdrawals from your Stripe account will always be for your full available balance. Unfortunately, partial withdrawals cannot be made.
Once you have entered your bank information into your Stripe account, all donations will be sent to your bank account on a rolling 7-day basis once. For example, if you received donations on a Monday, they will appear in your bank account the following Monday. Donations given on Tuesday will appear the next Tuesday, and so on. All donations sent to you on weekends or holidays may appear 8 days later.