You sound not desperate, but impatient. First of all, you should invest only what you can afford to lose because you never know when you will be able to gain profit, especially huge. Secondly, Bitcoin is a long term investment. It's not really a good idea to try to make money by investing in it for months unless you can see the future.
I think you are right that investing in Bitcoin requires patience and quite a long time, so you also have to be prepared so that the funds absorbed do not interfere with your daily activities. but in time you will receive what you really hope for from investing in Bitcoin.
You really have a nice plan towards Bitcoin investment and I commend that. The mistake many people make regarding investing in Bitcoin is being too anxious to take profits. They rarely give the market time and are quick to sell whenever their Bitcoin holding enter into some good profits. Taking profits is not bad, but how one go about it can make him lose a good proportion of the profits they would have made.
You also tried to capture the aspect of investing money that will not affect our needs much. I think that is the only way to hold for long.