MapleStory Chaos: Profession Recipe Guide

I'm wondering if it would be possible to put the recommended level of skill for each recipe, or give a general outline on the front page so that you can easily tell which level is recommended to make the recipes.
IE randomring - lv 60 - level 1 skill
- ingredients

or a simple list stating what level each jewel or ore is used for. IE - silver lv 1, dex crystal - lv 5, orihalcon - lv 7 or what ever it may be.

also i'm curious as to know the exact degradation or increase in exp for making something below/above your level of skill. it was stated that there is an ~5% exp loss per level under IE making a lv 1 while at lv 2 yields 95 exp vrs 100. but what about making a lv 2 item while at level 1? and if they are known; what is the approx rate of failure for something above your skill, and what % exp of the total exp you would have gained if you failed the item?

Some data from notes and ss:

item 5 levels above yours: 31% success rate
item 4 levels above: 39%

item 1 level above: 105 exp, 84% success rate
same lvl: 100 exp, 100% success
1 below: 95 exp
2 below: 90 exp
3 below: 86 exp
4 below: 82 exp ?