DO NOT use stealth. Seriously, its useless. Don´t pick guerilla - its super useless too.
Aaaand well... with offhand dagger, you deal most damage, with offhand shield, you survive more, easy as that

BUT you can go with shield, and use some shield talents from warfare tree, and almost all warfare skills are benefiting from finesse if you have dagger in main hand, so it in fact utilizes very well - such rogue could be potentially extremely good at stripping enemy armor into quick knockdowns, and would have absolutely unparalled mobility (upto 4 mobility skills!) while also having most ranged skills than is usual which can definitely help.
Poly is great secondary school for rogue too, especially thanks to increasing survivability.
Summoning doesnt really benefit you in any way imo