I used the below... If it were me,,, I would start the upgrade there... I am currently on Nochem 5067 and have stuck with him as I know he has the USCC carrier in his kitchen ROM's... after that(what you put in your personal kitchen) is just like a kitchen... to each his own... everybody's "tastes" are different.. get your phone upgraded, running good then you will be like the rest of us flashing 3-4 times a week playing with different selections.. trying to tweak out the last bit of RAM vs Functionality....
http://forum.ppcgeeks.com/showthread.php?t=24511