Depends on your preference.
1) Bow Stalkers have DEX as the main damage stat, therefore helping with their skill, Full Strip, to have a higher chance of stripping, also able to use arrows as elements, having the bonus of using Immaterial Arrows for more damage to ghost property (which most people use, not all.) Bow Stalkers, using a bow, therefore, cannot wear a shield in conjunction with their weapon. That's what the range for, then, and with Chase Walk, Tunnel Drive and Backslide, you'd be able to avoid most attacks on you. Watch for magic users. You get to carry way less berries though.
2) Sword-based Stalkers have STR as a main damage stat, enabling them to have a higher weight capacity therefore carrying more berries. Full Strip will have less success than a Bow Stalker's, and you have to use Converter scrolls / Cursed Water / BoS for elements. As a Stalker's HP isn't that high, you'll have problem tanking greater damages, without the range advantage. But you'll be able to use a Shield, which is very useful. You might need to slot a Phreeoni in your weapon or put DEX enough for 450~500 HIT, which could prove quite a problem when you want to get more damage out of STR, and HP out of VIT.
General outline for a Bow Stalker stat build:
DEX: 270~300, as this is your main damage stat.
AGI: Enough for 195 aspd, most likely staying at 1 if full-geared.
STR: 80~120 for carrying equipment, berries and supplies.
VIT: The rest of your stats here.
INT/LUK: 1
I don't really use/want to use/will ever use a Sword Stalker build, unless *cough* Elite 1h Swords come out.
Feel free to experiment with the outline, as it is not set in stone.