If you donated 250$ right now you'd have 100$ donor + lifetime + 250$ donor, you can stack as many as you want, you can pay $150.00 and get 250$ donor lose 100$ donor and keep lifetime sponsor.
Sorry we didn't respond within 3 hours to your pm. It says it is still pending waiting on paypal to review the payment. Feel free to PM me your paypal email and I will see if it has went through yet.