A paladin spending 20/lv on spells works out to 1 list/2 levels in core, spending 10/level on spells is 1 list/4 levels. . .(I'm being generous there, as 20 DP/lv = 5 ranks = 25% chance)
1 list/2 levels = 20 DP to spend on everything else, average.
1 list/4 levels = 30 DP to spend on everything else.
OK, order up, one paladin to go
one rank Body Development 2 DP
One rank in sword +2DP = 4DP
One rank in Power Point Development +4DP = 8DP (RMC makes that 5DP)
One rank in General Perception +3DP= 11DP (if you ignore perception, you die)
One rank in Trancend Armor +2DP = 13 DP (you need to start early and 1 rank every level)
One rank in MIA: Chain +2DP = 15 DP (use the 2DP chain average for ease)
So, if you intend to pick up a list pick every other level, you have 5 DP left (using the 5DP cost for PPD from RMC you'd have 4 left and not enough). . .you may purchase a 2nd rank in the weapon, and nothing else. This character can't swim, can't climb, can't ride a horse, can't do anything but walk and fight and cast.
This is assuming the GM doesn't wonder why you don't pick up any other skills, like lores relating to religion, demons, etc.
If you back it off to a list every 4 levels, then this semi can now afford a 2nd weapon rank, and afford to round themselves out just enough to not look like a poorly made random encounter. . .but now you are barely scratching out a little bit of magic ability, your Paladin isn't so powerful when they pick up list pick #2 at 7th level, and #3 at 11th level, etc.
I did just play a paladin a couple years ago, I know my numbers.