So I'll address all of your concerns right here. First and foremost, this build is by now means "meta". Its an alternative to the boring Feast Bot Tank Cho. However, the merits of Full AP Cho cannot be overstated in low elo games. As this guide is still in progress I have yet to add much of the information and proof that this does indeed work, but I have now had 3 accounts easily leveled on NA server through AP Cho'Gath.

1. The kill pressure is extremely high against bruisers and the likes such as Jax, Camille, Riven, and Rumble. Champs that don't value itemization of MR are destroyed in lane by AP Cho'Gath if played properly.

2.Kill pressure against tanks isn't necessary. Cho'Gath will outfarm any tank and out push if used properly. You will have an essentially infinite mana pool with your Rod of Ages, Passive, and Doran's Ring, allowing you to shove in easily against tank matchups.

3. Any good midlaner will destroy a Cho'Gath mid in the early game. By all means you can try to play, but against any mid laner who is willing to play aggressively you will be consistently forced under tower and will lose great pressure in the mid lane. Cho'Gath scales so there is no reason to put him in a position where he needs to make impact early. If you can farm safely and stay even you will ultimately get to a point at 2 items where your Q-W will kill any ADC without MR itemization.