Beast Master

[Darth That Guy]

I will be doing a 13th level Human Beast Master Ranger using mainly the CRB and APG. Campaign is Crimson Throne. My party consists of a Rouge, a Monk, a Wizard, and a Cleric. Going to have a Dire Bat as my companion; it will be same level as me. I will be taking Archery as my combat style feat. Seeking advice on how to set up my ability scores, and what should take priority? Right now, starting off, my stats are (with racial mod of +2 to any score I chose) is:

Str: 18
Dex: 16
Con: 17
Int: 12
Wis: 9
Cha: 13

Should I switch any of these around? Also, My GM has said I have 140,000 GP to work with, so I could get some weapons, gear, wondrous items (which increase my ability scores), and has also given me permission to use the Ultimate Equipment Guide to get some variety with my arrows, since CRB and APG only have regular arrows and smoke arrows as decent choices.The Wizard in our group has an Intelligence score of 29, so I'd love to get a stat up that high. I found one item called a sleep arrow, definitely gonna buy that one.

By taking Beast Master I lost a combat feat in 6th level but by being human I get an extra feat to begin with so I make up for it. Since I am new to Pathfinder, I am thinking of taking Point Blank Shot, Precise Shot, and Improved Precise Shot to keep things simple.

Thanks in advance.
EDIT: Also what would be a good AC to have at that level?

[Drone]

Maybe flip the Str and Dex scores.

Magic items/weapons that would be good are belt of physical might (Str and Dex), bracers of archery, oathbow, and efficient quiver.

Cool arrows from Ultimate Equipment are hushing arrows (silence on those it strikes; good for enemy spellcasters), searing arrows (1d6 fire damage each round for 3 rounds), sizzling arrows (same as searing arrows but acid instead). A couple of greater slaying arrows wouldn't hurt either. In Ultimate Equipment, there's the adaptive weapon special ability for composite bows. No matter what your Strength score, it grants the character's full Strength modifier to damage. Excellent if you get various types of Strength buffs.

With a dire bat animal companion, you should consider putting points in the Ride skill and taking Mounted Archery. Stay above the fight, stay mobile, and keep the arrows pouring in.