IMHO, a simple bump in point buy at chargen will make up the difference for PC's up to about 10th level.
I like to use 7th level as an example. A 7th level fighter has by RAW, 19k in equipment. That's a +1 weapon, +1 shield, +1 armor, +2 stat buff item, plus some sort of movement buff item like a rope of climbing or somesuch. Perhaps a bag of holding. Depends on the campaign.
Effectively, the PC has +2 to hit (assuming Gauntlets of Ogre Power) +2 to damage (possibly +3), +2 AC and an item that will come up sometimes. If you go from 25 point buy to 35 point buy, you get exactly the same effect. Str and Dex both get bumped to give the same bonuses. Granted, the movement bit isn't there, but, then again, with the stat bonuses to skills (and quite possibly more ranks due to Int), it won't make a huge difference.
The difference between a fully loaded PC with a 25 point buy and a base PC with 35 isn't all that large. At least until double digit levels. That's where the magic items tend to make a bigger difference. But, since you want to keep things to low and mid levels, point buy at chargen should make up the difference nicely.