As Mike spent the entire day with Zandaka on as well as training ID Escape and Create, he would notice that his stamina would decrease, as would his MP. Naturally he wasn't able to keep Zandaka on indefinitely, even with the Wisdom boost that the Skill gave. Its MP Cost was nearly double his MP Regeneration, so every now and again he would need to wait for his MP to regenerate during his day of Skill grinding in order to keep it on. Keeping Zandaka active as well as training ID Create and Escape would be incredibly draining on his stamina as well since Zandaka was a skill that actively drained Mana, and using Mana was stamina draining. 

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Stamina: 34 - 20 VIT = 14
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Mike would be exhausted by the end of the day, hopefully having found a private place to do this since it would look strange if he was in his backyard (as I am assuming his parents would question him standing out there for hours at a time), but by the end of the day his basic goal would barely be achieved. That last ID Create that he had in him would be enough to get him to that 10th level, but after that mustering anymore stamina or energy would be pushing it way past normal fatigue. Essentially Mike would probably start taking HP Damage if he started to push the boundaries of his stamina anymore. 

Zandaka, during the rest of the day whenever he had it on, would only gain 1 Level. It was leveling at a snails pace at this point using the method of just leaving the Skill on. If Mike wanted to level it faster, he would have to use the other methods of leveling, otherwise it was going to remain Level 11 for a very long while. But still, despite how drop dead exhausted Mike would be, his main goal of getting ID Create to Level 10, ID Escape only getting to Level 9, would be cleared. Clicking on the 'Time Compression ID' in the ID Create's Skill Window would reveal the following. 

[hider=Skill Data]
A Pseudospace that involves the literal compression of time. When created, another form of Pseudospace can also be created along with it, but you must stick to only creating that type of Pseudospace from then on out while in the Time Compression ID. 

For each day that you remain inside of a Pseudospace you accumulate a level of Time Compression Stress, each level adding a -5 penalty to all abilities as the longer you stay within an area that has time literally compressed puts further strain on your mind, body, and spirit. Staying in a Time Compressed space for too much time can cause permanent damage if one is not careful and as more Time Compression Stress is accumulated. 

Currently time is compressed at a rate of 2 to 1. Once you break a Time Compression Space, you cannot create or willingly enter another one for an amount of time equal to half the time you spent in the Time Compression Space, this having a minimum of 24 hours regardless of how much time you actually spent inside. [/hider]

It seemed like the space was useful, but also incredibly dangerous as well, especially with the Time Compression Stress factor. Whether Mike would risk this and take advantage of this new space, or if he would play it safe and wait would be the question here.