I have preference for the crit build. Both builds would be very hard and challenging.
Some comments that are of course linked to my ways of playing on the crit build you proposed:
For stats
- You do not need 10 Con and Thick Skull, you can switch for +1 Agi and take Sprint
For feats
- Pack rathound is a convenience feat, You can take it at level 28 before going to DC if you feel the need. You can use Regalia+lifting belt+BBQ.
- Recklessness should be taken earlier before level 6 maybe level 1 then. The same for 3 pointer but this is just my opinion here as knife are really lacking damage output and you will grenade enemies a lot.
- Fatal throw is an interesting feat but not before 22 or even later. Throwing knife will pack damage only late game + you need max dex to have full use of it.
For skill points
- Traps could be at 25, no need to go higher
- Lockpicking and Hacking could be a bit higher
- You may delay 70 to Temporal Manipulation by staying at 55
- Mercantile is very useful to, throwing should be maxed as well, I am not sure how to best manage the points, maybe by reducing crafting or delaying chemistry/biology...
A tough game is waiting for you in any case

Do not forget to collect toxic sludge for crafting gas grenade, they may be useful early game.