And I would like to know your opinion whether this plan will be successful in the long term and aims to provide additional funds to carry out the long-desired Hajj.
When you make plans with a goal, you become very determined and disciplined along the line to make sure that you meet the goal. When plans are made without any solid goal to meet, along the way you could get distracted and then fall into the pressure of failing to follow through the plan that you made.
Because you have a goal for the Bitcoin that you're investing in currently, I believe that you will be able to meet your goal and target and even stay disciplined.
As a bonus point for this target that you set for yourself, after you have successfully been able to send your mom to hajj, the character and discipline of investing with a goal would have already been developed, and that's an extra plus to carrying on through life.