Well, your stats seem fine, though clearly the 3 Constitution is hurting you. Your skills are spread out a bit. Tiny investments in Dodge and Evasion are generally not very helpful since if you're 88% likely to get shot in the face or 86% likely, you're still uncomfortably likely to get shot in the face. You've also invested early on in soft skills that don't really help keep you alive - Mercantile, Hacking, Lockpicking, and those crafting skills (which will help you stay alive, but not until you've got something useful to craft, obviously). As feats go, I would much rather - for an SMG build - have both Opportunist and Suppressive Fire at level 4 rather than just one of the two and Point Shot (unless Suppressive Fire no longer triggers Opportunist, but I don't recall that changing). Level 4 is fairly early to be at GMS L3 - are you playing Oddity or Classic XP? I usually get to level 6 by the time I'm done with L2, so it's possible you could use some additional exploration.
I wonder if it's down to gear, though. By the time you go into GMS level 3 where the bandits are, you probably should have cleared out the easier parts of the Underpassages, because they are so very very full of loot. Sure, you're a 3 STR SMG build, but you've got enough guns skill to use the AR available in the Underpassages - just hitch a ride (or walk, but that's a little dangerous) to Junkyard and buy one Junkyard Surprise, then savescum until you get +2 Strength from it. Underpassages will also have some nice armor options for you that might help you take a hit or two, especially if you get lucky RNG and the rathound room has a riot gear + shield. You could also, as long as you keep your distance, go loot the shelves and boxes in the Lunatic map due south of GMS. Might be something there helpful, and IIRC the boxes/desk are locked at 35 skill. There are some rathound maps that are adjacent to the path you took to get to GMS, but just barely out of the way; one of them has two rooms behind a gate that you could check for loot, too. There's also an abandoned Omega building map with a few items of loot.
If you don't want to reroll your character and focus a little tighter, then probably you should see about doing a little bit of exploration. Your character is going to be fragile, so early on and with such low Dodge/Evasion, maybe armor up a touch.
If you do want to reroll, then don't invest in Mercantile (edit: well, unless you want to rush to 15 to get a more expensive weapon off Lucas) or any crafting skills until you need them, probably around level 6 or so (maybe 8 or even 10 depending on XP mode and how much exploration you do). You might even want to go in for Psychokinesis instead of TM, early on - you won't get psi haste until after Depot A, anyway, and TK Punch and Electrokinesis will be awfully useful even at low skill in the early game (and electrokinesis always). Worry about surviving first, then worry about thriving. On Hard difficulty, there's enough money in the game that you don't need to worry about squeezing every last charon out of the early game.
Also, if you're going to have Psi Empathy and 6 Int anyway, make sure you rush to 35 points invested and get Premeditation at level 6. Whatever else you wanted to get can wait.
