Sadly yes, some of the equipments I listed can only be purchased from other people atm since the boxes are not on sale this patch. However, JP repakottowando is available, it is obtained from JP esplendor boxes.
^ info on what those JP boxes contents, most of them are not on ggftw/wiki since it used to be exclusive to JP server only. JP naked boxes are not there thp :[ so you might have to ask other people for the exact temper range.
And yeah, you don't really need HP on your light witch, I just added it since you are around lvl 140~150 you might not have learned SoH yet, so it might help you survive at least until you got your hand on SoH. If you already do have SoH then just stack MA :3
1. Well with web temper you can have really good results, you can get almost max stats on every stat :3 but it does not always happen, so just prioritize MA first and let the HP comes from compound.
2. Powerful weapon is still really good and also really cheap to get right now because of huge of amount of nikarium that we got from last event. I forgot to mention powerful weapon on my list XD but still JP equips out stat them easily, for example the JP Queue Bis Wand 190 (I also forgot to mention this one haha) can reach 90+ MA max and also be comped with MA, which is rare for a staff, you can out MA powerful stick even tho powerful stick is for lvl 215. JP repakottowando 190 itself can reach 110+ MA base, which is more than powerful stick.