Nice post here and in An Intermediate Guide to Clerics
I wouldn’t recommend focusing on Con. To avoid Con you may need more than one equipment. I use esmerald shield. Also, I got so little help from a secondary weapon that usually I just carry and use the shield. In my char, I focused in int so I can get better matk which works on most of skills and with Daino.
I tried a lot (really many times) to find another place like Valandis 91 . In S9 I think there isn’t. Epherotao Coast is a good place for Burn and gives you masinios material.
I also also hypothesize the Dex build can work well with Frieno and Toy Hammer. The thing here is not even enhance or trans the weapon but make it and Frieno proc as much as possible your buffs. Also others sets to add extra lines could make it even better. If someone still with this build and equipments, I would suggest to go Monk at rank 10 to double the number of attacks (which for me it means this build is not meta anymore)
As you got frost card, I would recommend using flame ground if you aren’t using it yet. There are some other skill scrolls that may help.
About finding the portal, I am soloing for a while and my experience shows that it trigger after a right amount of each mob kills. I discovered that trying to open the portal killing everything and after many many tries which I opened easier by farming an specific mob. Targeting a high spawn rate mob is recommend.
I will post again if I remember another thing