NPP 6.1 kobold rogue

So I usually play Vanilla, but I wanted to try a rogue, so I whipped one up for NPP..

So far I really like this little bugger, hes 15 and approaching dl20 (trying to knock around till I find some source of FA before I go much deeper) . He's knocked off Wormy and a couple of the orc uniques using archery and melee...got a dagger of flame early thanks to Smeagol..His stealth seems good even with no gear bonuses, and I love all the detection options from the mage books..makes getting the fights and objects I want from each level so darn convenient.. carrying my usual heal/escape kit (CCWs, ?PDs, _tele)..any advice as I sneak up on the midgame?