The Logic Off Topic list

I have a situation just a bit off the Logic path.
I've recently purchased both the jazz and swing music fonts (mac vers) from
Rich Sigler.
However, when trying to use the fonts I find that the 2 megs of ram in my
Apple Personal LaserWriter 320 are not enough memory to hold the fonts.
It has been pointed out to me that I may need 4 or 5 megs of ram to use
these fonts.
Is anyone with a similar set-up using these fonts successfully?
Is 4 megs of ram adequate?
Where did you purchase the ram?

Thanks for any help and may you be well and prosper.
jim