Although, as the quote demonstrates, it is allowed without being disliked to the Hanafis to pray all 8 rakahs together, it is not the best choice.
The Tahajjud is a special Islamic prayer which is recommended but not compulsory for all Muslims.
All the praises are for you, You are the Sustainer of the Heavens and the Earth, And whatever is in them.
What is the difference between a Tahajjud prayer and Qiyamullail? Jika impianmu tidak mampu membuatkan kami bangun malam dan mendirikan tahajjud, itu bermakna kamu tidak serius dalam mengejar impian itu.
Take all the means to achieve your goal; try you best and leave the rest to Allah subhanahu wa ta'ala.
Memohon ampunan, memohon hidayah, memohon kebaikan dunia akhirat, dan memohon kepada Allah untuk menyelesaikan masalah Anda.