Hi welcome to the Fencer world, I’m currently running a build that I call “DEFencer” . IMO Pelt1 is a must have for beginner swordie (1st it makes killing quest ez by providing aggro 2nd it makes you wanted in grinding parties. heck i even went for pelt3crazybuild, yep pelt3 and i’m loving the build so far). I consider my fencer a tank/dps since i can switch between offensive and defensive stance. Again my build is out of meta, may have lower dmg output than the metafencers and I still switch to sub weapon Dagger (from Shield) during the Offensive stance.
As for STR vs DEX, this is a months (year ) old discussion. Going Full DEX is a thing now since you can slot-in some yellow/red gems on your weapon w/c makes STR non optimal. I think your previous 20ish STR and 30ish Con is really fine since it’s a new char and you are a new player. 30ish con is okay just for you to grab the game concept w/o think much of your HP lul + you have low funds for gems/armors, 0-con is still okay if you’re a masochist just always take pardoner buffs.
You can always visit us at the Fencer thread: Guide to Fencer / Doppel [PVE]
Good luck and happy stabbing 
