Easiest way will be to download and extract Astral Patcher into mabipro's folder, it has a Data folder section in it's IJL15.ini. Edit that file to your liking. Astral also contains stuff like CP viewer and Zoom distance mods.
http://mabinogi.ir/thread/244-astral-patcher
Download Satori's Mod if you'd like to, extract into mabipro's folder and just run Mabi, everything should work; if not, I'm sure we could get it working..maybe. Satori's is pretty outdated by now for even this server lol.
Another thing to look into is Flippy's bPatcher1, which allows you to modify Pleione.dll to allow for a further view distance and some other stuff. Instructions are given in the thread, this tool could be used to make much more complicated mods, iirc, but view distance is already made by Flippy.
http://mabinogi.ir/thread/1093-tutorial-custom-patches
Feel free to ask me if it breaks anything~ lol