Sure the initial landing force will get mauled, no doubt, but the second wave's going to have all the air support and bombardment support it's going to need.
Maybe not. The proposed third strike at Pearl Harbor never happened for a number of reasons, but one was lack of avgas. When "Hiryu" and "Soryu" were detached to aid the Wake Invasion forces their commander was told flat out the carriers could make one strike only as avgas was very short, at which point the carriers would have to return to Japan.
Assuming Yamamoto's plan worked and there was no initial naval battle there still would have been a need for aerial support. But the carriers would have to limit that in order to insure there was enough avgas for their airwings to be able to attack the US Fleet racing to retake Midway.
If there was a naval battle first then avgas stocks would be depleted, perhaps enough to prohibit extensive air support. And Japan didn't have anything like the US Marines had later where troops could call for attacks on specific targets, the troops would be unable to communicate with the aircraft at all.