You can certainly book the package and pay as you go when booking with a travel agency. You can book the trip up to a year in advance and make payments up until the final payment is due 45 days prior to your check in date. The travel agent will watch for any discounts that come out and automatically try to apply it to your reservation to save you money.
If you don’t currently work with a travel agent. Please feel free to contact Kingdom Konsultants at firstname.lastname@example.org or toll free 1-866-566-7858