Hmm, I have put some thought into what I could get away with in this type of campaign but. . . I'm not completely versed on the point system, but this IS what I know so far:
Class Abilities/Spell progression: 50 points
Skills: 1 point per 4 skill points
HD Upgrade (each character has a set D6 HD at each level and can upgrade accordingly):
2 points - D8
3 points - D10
4 points - D12
5 points - D20
5 points after d20 per +10 (so d20 to d20 + d10 = 5 more points)
Those costs stack as well, so if you were to upgrade from a d6 to a d20, it would cost you 14 build points.
Feats: 3 build points (basic req's, things like weapon focus and those sort of things)
5 points for tier 2 (2-3 req's) then 7 points for tier 3 (4+ req's)
At each level also, the starting 'shell of a character' you're given basically the Rogue's class progression, you can spend 3 points at each level to increase your bab by +1, and at every stat bump you can spend an additional 10 points to get another +1 to a stat, also we're allowed races/templates that cost up to LA 2 and may spend 15 points per LA to remove it (so basically if you had an LA 2 you would start at level 3, instead of the base 5 we're creating the characters at, but if you spend 30 points, you can remove the LA but still retain the bonuses)
Also we may spend 3 points at each level to raise a specific save by +1 OR we can spend 5 points to raiseall the saves by +1
Edit 2: There isa difference when paying for the class abilities and spell progression for a character, for example, the 50 points spent towards spell progression will give you EACH spell under a spellcasters list of spells for every level that you are allowed up to (so you can spend 50 points, and get all spells in a Wizard spell list so long as you meet the required level)
Edit 3: Forgot most important part: We start with 150 points at level 1, and roll the character up to level 5, gaining 10 points per level, so essentially have 190 build points to spend, and we start off with 10k gold*