Eli is adoreable! I haven't seen a "Dorkie" before (and we just won't talk about the number of
real dorks I know, OK

?).
I would imagine his nutritional needs would be pretty much the same as "full" Yorkies ... the overall size and activity levels are the same. There is a wealth of knowledge about diets, whether you choose to feed commercial feed, will be cooking his meals for him, or go with the raw diet.
The folks around here are a pretty good lot; I'm sure you and Eli will be welcomed