You know that you dedicate 255EVs to each stat? Well if you can, before you do anything, I suggest that you get enough money to purchase 10 of each of the items to boost the target stat. If you have little money, just get enough for one Pokemon for the time being. That way, it gives you 100 starting EVs for the two stats.
I also recommend stick to just two stats, okay?
HP: Makuhita (1), Slowpoke (1), Phanpy (1), Grimer (1), Ditto (1), Wobbuffet (2), Whismur (1), Loudred (2), Wailmer (1), Wooper (1), Marill (2).
Defense: Geodude (1), Graveler (2), Exeggcute (1), Slowbro (2), Koffing (1), Pelipper (2).
Special Defense: Tentacool (1), Tentacruel (2).
Attack: Poochyena (1), Mightyena (2), Absol (2?), Bellsprout (1), Weepinbell (2), Paras (1).
Speed: Pidgey (1), Pidgeotto (2), Rattata (1), Raticate (2), Taillow (1), Swellow (2), Wingull (1).
IVs are something you should worry about after getting the hang of EV training. <: