ok i got 07 gonna make have a lil bit more power. i was thinking doing the 2/4 drop kit on 18s or 20s or i see the 2/5 drop on same rims

i got the reg cab 6 foot bed 2oo7 i do tow small trailer with 2 atvs on it or 1 atv in the bed does that make diffrence lowering the truck?