The capacity for Hajj is one of the conditions of its obligation. Therefore, if you are capable of offering Hajj and paying the required installments at the same time, it will obligatory on you to offer it. However, if it becomes impossible to pay the installments along with affording the costs of Hajj, then you should pay the required installments to the bank and postpone Hajj until you are capable of offering it, for Allah (Exalted be He) says:
And Hajj (pilgrimage to Makkah) to the House (Ka‘bah) is a duty that mankind owes to Allâh, for those who are able to undertake the journey.
May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.