Build for My Son

[Musashiclaw]

My 5 year old son plays and likes to do three things. Swing a sword first, shoot a bow sometimes and open locks/traps. He does quite a few quests solo like Delera's 1 or redwillow and others...

He is a 28pt build elf and I sorta let him pick how he wanted to go.

Level 1 rogue
Level 2-6 as Ranger
Level 7 as fighter.
Stats
14
16
14
12
12
8
feats TWF, Bastard Swords(he likes the looks of them), Dodge , Toughness

he has been maxing search, disable and openlock with UMD thrown in.

Problem is this how many pts does he need in open lock? I hear only 8? to get the roll he needs to open just about any lock.

question is where would you go with this?
level 8 Ranger to get Tempest1
Level 9 another level of rogue?
Level 10-20(doubt he will ever make 20) fighter for kensai I/II?
so in the end 12/6/2 fighter/ranger/rogue?