Well I don't think such mods will create large load even for 2-3 years old PC, console hardware 5 year old and can handle game normal PC will even have some room for mods, you not need 4096x4096 textures and highpoly meshes for fun features.
I don't think you quite understand the situation I am currently in kind sir. I live in a Section 8 Projects housing complex. I have one window, one bed, one dresser, no closet and no TV in my room. I'm currently a High School student taking classes for free at Santa Fe College.
Last year, I was able to buy a decent laptop. How? I'm resourceful as hell. I get financial aid for living below the poverty line, for being the first in my family to attend college AND for essentially scoring in the "certified genius" level on my College Placement Test (i'm not that smart, I'm just an awesome test taker). I went to Best Buy during Black Friday and got an awesome deal. I've had a 2001 Emachine desktop for the past five years :brokencomputer: , but I'm now lucky to have a $250 MSI 2010 Laptop with 4 Gigz of RAM that originally cost $450 :celebration: . I got a job a couple months ago and can now afford wireless for teh internetz :jammasterjay:
Do you know how happy I was when I got that computer? Not only could I know more easily do my school work more easily and access awesome forums such as this, I figured I could now play FO3 :fallout: and GET MODS!!!! :intergalactic:
You seem like a smart computer guy so you know what I would eventually find out much to my dismay. It wouldn't be powerful enough for such a game, much less with mods, so I'll just have to wait until a nice, fat check comes in to buy such hardware, but that will take a while